Being able to sell tainted drugs to a npc (Drug den)? Or being able to mix it with the pure drugs. If you mix to much tainted with to little pure drugs, all of it gets tainted. But if you’re cautious and/or lucky, you can get rid of your tainted drugs and create pure drugs.

Being able to pay the market fees, casino, property upkeep straight out of the bank (like  paying the cops works) instead of having to withdraw cash first.

Add the property value to the networth calculation.