The evolution of Ethereum has increasingly centered around Layer 2 (L2) scaling solutions. While these solutions enhance scalability, they also raise critical concerns about decentralization and trustlessness. Developers and the community face a fundamental choice: preserve Ethereum's core ethos or prioritize faster, more efficient networks? In a revealing discussion, these tensions came to the forefront as core researchers debated the current trajectory.
The Central Argument: A Misplaced Focus?
Max Resnick, a researcher working with the Special Mechanisms Group (SMG), presents a contrarian view within the Ethereum community. He argues that the ecosystem has become overly focused on Rollups at the expense of Layer 1 (L1) development. This neglect, he contends, has left L1 struggling to support core applications like DeFi.
Resnick calls for a re-prioritization towards enhancing L1's decentralization and performance optimization instead of relying solely on L2s. A cornerstone of his proposed redesign is significantly shortening block times. While optimistic about ZK technology's potential, he expresses deep skepticism about the current direction of the L2 ecosystem and its long-term alignment with Ethereum's values.
Key Issues Discussed:
- Has Ethereum's roadmap strayed from its original path?
- Are L2 solutions truly extensions of Ethereum, or are they hindering the flow of users, transactions, and value to the mainnet?
- Is there a misalignment between the current model of Optimistic Rollups, controlled by centralized sequencers, and Ethereum's ultimate goals?
- What are the potential consequences if these issues are not addressed?
TL;DR: The Core Concerns
- Roadmap Deviation: The original goals of decentralization and censorship resistance are being overshadowed by an excessive focus on L2 solutions, neglecting vital L1 development.
- L2 Challenges: While reducing transaction costs, L2s introduce risks through centralized sequencer control, potentially compromising Ethereum's foundational vision.
- L1 Priority: The priority should be increasing L1's capacity and speed to ensure it can reliably support core applications without complete dependence on L2s.
- ZK vs. Optimistic Rollups: The current roadmap disproportionately benefits Optimistic Rollups, despite ZK Rollups being a technically superior solution that deserves more attention.
- Decentralized Sequencers: The push for truly decentralized L2 sequencers is crucial. Many projects pay lip service to decentralization but fail to implement it.
- L2 Relationship: The definition of an L2 is blurring. Many current solutions behave more like independent chains, failing to fully leverage Ethereum L1's security.
- Worst-Case Scenario: The continued growth of centralized L2s could lead to a future where Ethereum is critically dependent on them, eroding its decentralized nature.
"Ethereum Lost Its Way Post-Merge"
A significant weakness in Ethereum research, according to Resnick, is the lack of communication between different specialized teams within the ecosystem. Consensus teams work on finality, while MEV teams tackle billions in potential user losses, often with conflicting approaches.
The sentiment is that after the monumental effort of The Merge, a sense of fatigue set in. The community stepped back and, upon returning, began prioritizing the wrong objectives. While improving data affordability for L2s via blobs was a success, it came at the cost of stalling progress on other critical fronts like builder and relay market decentralization.
This focus, Resnick argues, primarily benefited Optimistic Rollups, creating an "Optimistic L2 Roadmap" rather than a neutral one. He suggests that influence from core developers also working on Optimistic L2 projects may have skewed priorities, leaving ZK technology—which offers superior state compression and bandwidth efficiency—under-optimized.
The critical question for application developers is not current fees, but scalability during exponential growth. If a "killer app" brings a 100x surge in users, Ethereum L1 in its current state would become congested and unusably expensive. This fearsome scalability ceiling deters top-tier developers from building on Ethereum L1.
👉 Explore advanced scaling strategies
"Are You Trying to Start an Ethereum Civil War?"
The debate intensifies around whether L2s are true extensions of Ethereum. Skeptics view them as separate chains with independent fee capture, while supporters see them as natural expansions that leverage Ethereum's security.
Resnick sees it as a spectrum. However, he posits that most current L2s behave more like independent chains. To be considered part of Ethereum, they must frequently push data to L1, enable fraud proofs, and move toward decentralized sequencers. The concern is that the winning L2s have little incentive to do this. They profit immensely from centralized sequencer fees and show few signs of relinquishing that control.
The "doomsday scenario" is a future where network effects and market power cement the dominance of a few large, centralized L2s (like Base). All economic activity would occur on their centralized servers, making a return to a genuinely decentralized financial system nearly impossible. The window to change course is narrowing.
The common rebuttal is that L2s are in a "Stage 0" and will gradually decentralize. Resnick counters that the financial incentives for large, profitable companies to retain sequencer control are too powerful. The pressure to decentralize diminishes as the ecosystem grows more dependent on them.
True alignment would be demonstrated by L2s implementing censorship-resistant, credibly neutral, decentralized sequencers—a technically achievable feat that many seem reluctant to undertake.
L1 and L2: A Symbiotic or Parasitic Relationship?
The ideal end state, for Resnick, is not Ethereum as a cheap, undifferentiated data availability (DA) layer with powerful companies building monopolistic rollups on top. The current dynamic feels more parasitic than symbiotic, with L2s competing directly with L1 for the same users and applications (like DeFi).
A better model would be a clear division of labor: L1 optimized for high-value, security-critical DeFi, and L2s handling low-value transactions like small payments. This requires L1 to be significantly improved to be "good enough" for its designated role.
The fundamental tension lies in value capture and incentive alignment. L2s have their own native tokens. If these tokens underperform, developers holding them may make decisions that benefit their token at the expense of the broader Ethereum ecosystem. This creates a direct conflict between L1 and L2 value.
Based Rollup: A Potential Solution?
Based Rollups, which outsource their sequencing to Ethereum L1, offer better incentive alignment. Value transfer between L1 and a Based Rollup is frictionless. However, they inherit L1's limitations, namely its 12-second block time, making them uncompetitive against L2s with sub-second finality.
Furthermore, existing L2s have little incentive to become Based Rollups and forfeit their lucrative sequencer revenue. While a superior model if started from scratch, social pressure may be insufficient to drive this change now.
The Prescription: A Roadmap Reorientation
Resnick's proposal for a reoriented roadmap centers on three key changes for L1:
- Shorten Block Time: A 12-second block time in 2024 is non-competitive. This is the single biggest required shift.
- Enhance Real-Time Censorship Resistance: Users should be able to reliably get transactions into the next block without exorbitant fees.
- Increase Throughput: L1 must support orders of magnitude more activity to attract developers building potential "killer apps."
He criticizes a prevailing "failureist" attitude in Ethereum research that dismisses ambitious L1 scaling as currently impossible. He argues for borrowing successful ideas from other chains, like parallel execution and state separation, and integrating ZK compression technology directly into L1 to alleviate bandwidth constraints.
This reorientation would involve reprioritizing the existing roadmap, placing goals like single-slot finality later and bringing L1 performance enhancements forward.
Frequently Asked Questions
Q1: What is the main criticism against the current Ethereum roadmap?
The primary criticism is that it has become an "L2-first" roadmap, prioritizing data cost reduction for Optimistic Rollups while neglecting essential upgrades to Ethereum Layer 1 itself, such as reducing block time and increasing throughput for core applications.
Q2: Why are centralized L2 sequencers a problem?
Centralized sequencers contradict Ethereum's core value of decentralization. They create a single point of failure, control, and potential censorship. If most activity migrates to chains with centralized sequencers, Ethereum loses its censorship-resistant and trustless properties.
Q3: What is the difference between Optimistic and ZK Rollups in this context?
Optimistic Rollups rely on fraud proofs and post all transaction data to Ethereum, using significant bandwidth. ZK Rollups use validity proofs, compressing state and using less bandwidth—a critical advantage for future scaling. The current roadmap is seen as favoring the former.
Q4: What is a Based Rollup?
A Based Rollup is an L2 that outsources its block sequencing entirely to Ethereum L1. This aligns incentives between L1 and L2 but forces the L2 to inherit L1's slower block time.
Q5: How would shorter block times help Ethereum?
Shorter block times improve user experience by reducing latency, make Ethereum more competitive with other chains, and enable new architectural possibilities like more viable Based Rollups.
Q6: Isn't the plan to eventually decentralize L2 sequencers?
While many L2 projects promise future decentralization, researchers like Max Resnick are skeptical. They point to the strong financial incentives for companies to retain control of profitable sequencers and the consistent delays in delivering on these promises.
👉 Get deeper insights into blockchain governance
Conclusion: A Call to Action
Resnick denies any motive other than wanting to see Ethereum succeed. His financial interests are tied to Ethereum's health, not to rival ecosystems. His argument is not to abandon L2s but to rebalance the roadmap, ensuring L1 becomes robust enough to serve as the secure, decentralized foundation for the ecosystem.
The call to action is for the community to:
- Contact core developers and advocate for prioritizing shorter block times.
- Independent stakers should communicate their actual hardware and bandwidth capabilities to dispel myths about network limitations.
The goal is to refocus on making Ethereum L1 so capable and decentralized that it remains the undeniable home for critical financial innovation.