The Ethereum Foundation proposes an interoperability layer solution to optimize the L2 user experience.

The Ethereum Foundation's Account Abstraction team has proposed the "Ethereum Interoperability Layer (EIL)" solution, aiming to make all Layer 2 networks function like a single Ethereum chain. Based on the ERC-4337 standard and the Trustless Declaration principle, this solution allows users to complete cross-chain transactions with a single signature, without requiring additional trust assumptions. Users can directly initiate and settle cross-Layer 2 operations from their wallets, without relying on relayers or solvers. EIL aims to solve the fragmentation problem of Layer 2 networks, simplify token management and cross-chain transfer processes; users only need to select assets and addresses, and their wallets will automatically complete inter-chain routing and asset delivery.