To build off of @vitalik.eth’s cross-L2 transactions for wallets ideas, as a user I don’t actually care what chain my ETH is on. I would love to see one rolled up balance of how much eth I have instead of seeing 5 line items that say ETH with a chain logo and an amount. 

Then when I go to use ETH on any chain the wallet can do the work to make sure enough is on the chain I’m trying to transact with.

Hyperpunk. Nouns. OP Citizens House. Co-founder, Scout Game. 
https://scoutgame.xyz

Lettuce 🥬 simplify the complexity involved in using different blockchain chains. It could be helpful to have a "beginner's mode" toggle that makes navigating these systems more manageable for new users. Additionally, implementing a small service fee for this simplified mode could help maintain it.