You’re really close:

2-of-3 collaborative custody multisig where the “bank” holds 1 of 3 is the solution here. Unchained Capital’s goal is to provide this solution, and they’re already doing it. 

If a bank tried to do 1-of-2 or 2-of-2, Unchained’s model makes that instantly obsolete. It’s honestly genius. It’s bank level security for a back up, but they don’t actually control your funds.  

frostdragon

bitcoin

Discussion: How much will the average person know about Bitcoin?

> Personally, I think it will start with HWW / backup + PIN / backup + password / backup, and will end with multisig "savings" + lightning "checking", or people will just rely on lightning 100%

I think banks will still exist to hold one key of a 2of2 multisig. That will solve the problem of custody for most people.

edit: Wait... then they still have to not lose their key. This setup only protects against getting hacked. Okay, nevermind, lol. 

But it's at least something.