Real simple one here. If at all possible, I think it'd be an alright idea to be able to give other players access to a business bank via banking.gta.world. A lot of people run businesses and might hire someone to handle finances for them. It'd be a heck of a lot easier for them to be able to access the business account whenever they need to rather than having to ask the business owner seventeen times a week to print a PDF statement, or to send screenshots.
Possibly an adjustment in the /bmanager script so Manager roles can access the account? Maybe a check-box option in the UI to give specific employees of a business access(?)
How will it benefit the server?
Just something small to make people's lives easier. Some people actually like bookkeeping and would make business-related roleplay just that much more interesting (at least I think so, anyway).