Vitalik proposed introducing transaction simulation functionality to improve Ethereum's security and user experience.

Ethereum co-founder Vitalik Buterin has proposed improving the user experience and security of Ethereum wallets and smart contracts through features such as "transaction simulation." Users can specify their on-chain operational intent and then choose to "confirm" or "cancel" by viewing the simulation results. He also suggests introducing mechanisms such as spending limits and multi-signature authorization to ensure consistency between user intent, expected results, and risk limits, thereby reducing the likelihood of high-risk operations. However, he also points out that defining user intent is extremely complex, making "perfect security" impossible, and calls for multiple methods to verify user intent to improve system security. Security is one of the "blockchain trilemma," considered a key challenge alongside decentralization and scalability. In recent years, the Ethereum ecosystem has focused more on decentralization and scalability, especially the latter. (Cointelegraph)