Hyper local ecash mints are the future. And it'll use miniscript and FROST.
Discussion
I don't really like Fedimint, but the one thing that I took from their documentation, which I liked, was using a "second party host", someone close by who you trust and you can break their legs if they steal your money.
Harken back to a time your local bank meant something.
Reputation will be everything
Still way out of my mental capacity. I'll maybe like this in ten years.