Ethereum co-founder Vitalik Buterin has proposed a new gas limit of 16,777,216 for single transactions on the Ethereum network, set to be implemented in 2025. This initiative aims to limit the scale of individual transactions or blocks, thereby reducing the risk of denial-of-service (DoS) attacks and simplifying client operations. Additionally, Buterin has suggested future upper limits on code byte access, ZK-EVM prover cycles, and memory pricing to further enhance network efficiency and security.