Ethereum is entering a new phase of interoperability with the introduction of the Ethereum Interoperability Layer (EIL), aiming to unify Layer 2 (L2) solutions. EIL is not a new blockchain but a framework that standardizes state proofs and message passing, allowing different L2s to interact seamlessly without altering their security models. This development seeks to eliminate the isolation of L2s, enabling cross-chain operations with a single signature, akin to using a Visa card globally. EIL leverages ERC-4337 account abstraction and a minimally trusted messaging layer to enhance user experience while maintaining security. The system allows for cross-chain transactions without centralized relayers, using a Cross-Chain Liquidity Provider (XLP) to pre-pay funds and ensure quick settlement. However, the reliance on economic penalties for security raises questions about potential risks and trust assumptions. As Ethereum progresses with EIL, the community remains cautious about its implementation, balancing efficiency with security. While EIL promises to simplify user experience and maintain Ethereum's core values, its success will depend on addressing economic and engineering challenges inherent in cross-chain interoperability.