if i build a bank of bitcoin that operating like a traditional fiat money bank when people can save the money and get interest for their saving and also people can get a loan from my bank but the fiat money is change for bitcoin, the question is would you guys trust me to save your bitcoin on my bitcoin bank that i want to build ?
Well technically, you should earn somehow my trust, but in the other hand maybe i should trust you if a lot of people has been invested on your bank, and i think you should do more than a bank, what i mean is like do something interesting.
The pros i guess, it can be easy and less hassle if your idea or the what so called bank of bitcoin be implement.