I would like to have a bank system in PRO, then i could draw an ATM :p
the thing is it might take shane a little while to code this, so it wont be a priority, also it could be used as an extra security system if your account gets hacked, at least ur money stored will be safe behind a pin code.
an alternative to this however is make an account with the same name but add BANK to the end. then get 4 badges, and use it to store ur money in.
It isnt against the rules to multi-client if ur using it for trading between ur own accounts, so thats always an idea.