Thus, prior to migration to Proof-of-Stake, all Ethereum 1.0 clients should turn into optimistic rollups clients. All Ethereum ($ETH) users' instruments, i.e., accounts, decentralized applications and $ENS names (Ethereum-based "unstoppable" domain names) should be live on Layer 2.
As a result, Layer 2 protocols should exist in wallets as built-in features, and $ENS names should be registered only on Layer 2 infrastructure.
Cross-L2 bridges that enable interaction between different types of scalability solutions are also sine qua non for Ethereum scalability, according to Vitalik's latest roadmap.
In a nutshell, all things that work on Ethereum ($ETH) have to move from Layer 1 to Layer 2 before ETH2 starts its rollout.
100,000 TPS: long-term perspectives of obligatory scaling
Also, Vitalik shared the long-term prospects of the new approach to scalability. He estimates that once optimistic rollups are fully implemented and the transition to ETH2 begins, Ethereum ($ETH) will be able to process 100,000 transactions per second (Phase 1.5). In ETH2 with its sharded infrastructure, 1000-5000 TPS will be available.
Thus, sharded ETH2 as a consensus layer will guarantee more integrity than every other sharded chain in existence.
This program is really inspiring and well designed, as it proposes to solve all Ethereum ($ETH) scalability issues once and for all, merging the benefits of all popular Layer 2 solutions in existence. Meanwhile, some top-level Ethereum ($ETH) devs are concerned about its UX.
Hudson Jameson, seasoned Ethereum ($ETH) engineer, alerts that some $ETH users may lose their Ethers, NFTs and tokens. Also, they will have to choose one of numerous Layer 2 solutions, which can be really difficult for the average Etherean:
Otherwise we are just building Ethereum for the niche tech. people and not for the world.