Wu said that community user @cyodyssey said that Helios is currently one of the most effective light clients and we are conducting various experiments based on it. Vitalik Buterin responded that I think the solution will come when @NoahCitron's Helios (or an alternative) makes a convenient javascript library to handle these things that wallets can easily import. In addition, it is important for L2 configuration (config) to be transferred to the chain, because this will make it easier for lightweight client state proof verification functions to become part of the configuration, making universal L2 lightweight clients possible.