My idea would be to create a bank to safely store people's bitcoin and other crypto for people who just want to hold for a lot of time.
They would register with the passport or ID, it would cost 100 GBP + 1% to deposit and verify people's identities.
Then, to withdraw, it would take 3 months, they would have to show the passport and have a meeting via zoom once a month during 3 months stating they would want to withdraw, it would cost 300 USD plus 1% of the value.
It would compensate for people who want to hold for a lot of time without having security concerns.
I think this is not the reason bitcoin was created. If bitcoin should have a bank the people will help you to store your bitcoin that means their is no different between bitcoin and fiat. One of the reason why we have bitcoin is for freedom, you having access to it whenever you want. You can bank your bitcoin yourself by hodling it with a non custodial wallet that is very reliable. Bitcoin is personal and have nothing to do with any other person.