I won't support this idea, simply because bitcoin has already many place to be put on and that is bitcoin wallet, 3rd party wallets. In my own opinion you dont have to make a tangible thing for a non-tangible one. So a non-tangble bitcoin is good for a non-tangible wallet. Good bye and let's not welcome bitcoin banks.
Maybe we have to think that the purpose on why bitcoin was created is because we want to have a decentralized transaction, banks will make it decentralized and we do not want that to happen, we can have our bank in real world while we also have a chance to use a decentralized system.
I don't know what would a bitcoin bank look like but if it's similar with the banking system in the real world, then for sure, lots of people will not support it.