A better approach is to have hyperlocal offices where you can go to do business. Is this less “efficient”? Yes but when the proceeds of efficiency go to shareholders anyway it doesn’t really matter.
I agree with this but that means you need to regulate it. Even banks nowadays are purposely understaffing themselves and closing early because "what the heck are you going to do about it? Go to a different bank? They're closed at 4pm too!"
The earliest banking was done with letters of introduction. That is why banking families had early international success. They had a familial trust and verification system.