Supported.
While adding a bank feature, to make it more appealing to Liberty City and why it should be more used, there should be a interest rate on how much money you have in your bank and you make a extra 2% of cash each month/week.
Example: If you have 10k, you receive 5% of interest which could be like $200 bonus.
Example: If you have 50k, you receive 15% interest, which is like $500 bonus to your bank account.
It would make people use the bank system and would be a great alternative of making cash.