Actually I do see merit in ecash. I liked the idea of the mutiny wallet before it was discontinued (it uses fedimint, which is different from cashu, but the same idea basically). Note that if you want to cross the mint boundaries, you are still subjected to the lightning fees, and if you have base fees in your route, the problem is the same.

But the real advantage of ecash is that it works around the problem "you need to have money to receive money", which is very good. Unfortunately it comes at the expense of custody of your bitcoin. That said if you have only a small quantity in ecash, this, I think, is a completely acceptable tradeoff. Something like continuing the idea of the mutiny wallet, but where the wallet automatically allocates your funds to ecash, lightning or onchain depending on the amounts might just work for regular people. I hope developers will try to do it.

Sidenote: I remember when everybody was hating muun wallet because of the way it worked. Well, it did allow you to receive few sats just after you downloaded it and no amount of screaming that it's not a real.lightning wallet and that it is not scalable prevented people from using it. Well, instead of screaming, first acknowledge the problem and think about fixing or at leas working around it, instead of insulting users.