According to Tim Beiko's summary of the 213th Ethereum Execution Layer Core Developers Meeting (ACDE), the main discussions included: delaying the increase of the Gas Limit to 60M (waiting for Berlinterop testing to provide specific throughput and latency data, which may take about 3 seconds to execute in the worst-case scenario), Glamsterdam brainstorming (FOCIL: implemented in five clients, aimed at enhancing the mempool's resistance to censorship, preventing transactions from being maliciously ordered or excluded; EVM64: improving the execution speed of the Ethereum Virtual Machine (EVM) by introducing 64-bit arithmetic operations, currently awaiting performance benchmarking; Block-level Access-Lists: supporting deterministic parallelization, working in conjunction with the delayed execution mechanism, but the design still needs improvement and compatibility with FOCIL; Available Attestations: aimed at enhancing the security of fork choice rules, with related discussions to be transferred to the consensus layer meeting), etc.