I believe easy of use should be accompanied by security. In order to drive adoption, crypto wallets should be designed in such a way that they can be appealing to first time users. I have used so many wallets in the past and for some, I had to uninstall them right after downloading. I have finally settled with Atomic Wallet because it supports multiple coins/tokens and it is non-custodial. I has one of the nicest UI with the latest having price charts for most of the assets.