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Ethereum developers embrace Vitalik Buterin's long-term vision but urge quicker execution
The "Lean Ethereum" strawmap, updated earlier this week, has gained support from many of the network's researchers, though several say the biggest challenge won't be deciding what to build, but how quickly it can happen.
By Margaux Nijkerk|Edited by Cheyenne Ligon
Jul 6, 2026, 3:34 p.m.
3 min read
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Ethereum's leading researchers and developers have broadly welcomed Vitalik Buterin's updated "Lean Ethereum" roadmap, praising its focus on privacy and quantum-resistant cryptography as the network's long-term direction.
While the community largely agrees with Buterin's vision, several prominent figures argued the proposed three-to-four-year timeline is too slow and urged the network to accelerate development.
Ethereum's ambitious plan to reinvent itself over the next several years is getting an enthusiastic reception from many of the network's researchers, though several say the biggest challenge won't be deciding what to build, but how quickly it can happen.
Earlier last week, Ethereum co-founder Vitalik Buterin published an updated version of the "Lean Ethereum" strawmap, a long-term vision that would overhaul nearly every major part of the blockchain. The strawmap was originally published in February. Buterin's updated proposal calls for sweeping changes aimed at making Ethereum faster, cheaper to run, more private and resistant to future threats such as quantum computers.
While the roadmap is still years away from becoming reality, early reactions suggest many of Ethereum's leading developers agree with its direction.
Eli Ben-Sasson, co-founder of StarkWare, called the roadmap "many good things, a few unclear things, still a few problems."
He praised Ethereum's decision to put recursive STARKs, a cryptographic technique designed to make the network much easier to verify, at the center of its future, saying it marked a major shift from earlier years when much of the Ethereum community was skeptical of the technology.
Ben-Sasson also welcomed Buterin's decision to make privacy and quantum-resistant cryptography top priorities.
"Quantum safety—excellent," he wrote on X. "Glad to see this as a high priority."
But he argued Ethereum shouldn't wait three to four years to get there.
"'3-4 years' as the timeline is way too long," Ben-Sasson said. "Especially for quantum readiness."
Former Ethereum Foundation researcher Dankrad Feist struck a similar tone. Calling the roadmap's vision "really cool," Feist said on X that features like near-instant transaction finality and dramatically higher throughput could transform the network.
His biggest concern, however, was speed. "But 3-4 years is very slow," Feist wrote. "I think we should be ambitious and get it done in ~1 year."
Feist even suggested recent advances in AI tools, including large language models, could help accelerate development.
Not every discussion centered on timing. Some researchers dug into the roadmap's technical details.
Ben-Sasson questioned one of Buterin's proposals to introduce new types of blockchain "state,” essentially the data Ethereum stores about accounts, balances and smart contracts.
"New kinds of state: what does that mean? Who is affected by it?" he asked, calling for more explanation.
Meanwhile, Ethereum Foundation researcher Barnabé Monnot focused on how the roadmap had changed from an earlier version released in February.
Among the biggest differences, Monnot noted that some upgrades designed to speed up block production had been pushed further into the future, while changes to Ethereum's consensus system had moved up the roadmap. He also pointed to the removal of several previously proposed features, changes he said could ultimately help the network achieve faster transaction finality and stronger censorship resistance.
Taken together, the reactions suggest Ethereum's research community is largely aligned on where the network should head next. Rather than questioning the roadmap's core ideas — such as better privacy, stronger cryptography and new ways to scale the blockchain — the debate is increasingly about execution.
For many of Ethereum's top researchers, the destination looks right. The question now is whether the network can get there fast enough.
Ethereum NewsVitalik Buterin
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