Do you have a timeline when all the upgrades in Ethereum completes, it will take a long time as there are a series of upgrades that are to be implemented and en route you might find major bugs as well. So it is hard to speculate when Serenity will be completed. Users are tired of paying huge amounts as transaction fees. Have you tried staking any coins that runs on ERC, the fees will be above $35 and hence many projects are migrating to other chains as well which means more competition for Ethereum when all the upgrades are completed.