the idea of the money would me cool
Nothing new realy. It was in the Commodor64 game and maybe NES.
you don't have the money to repair it you would have to walk or take public transportation to your destination.
Why not Janine or one of the ghostbuster's personnal car? Not fast like ecto-1, you cannot carry much equipment and the number of ghostbusters on the site will be lowered to two. Without a siren, you won't be able to burn a red light without taking the risk of car accident, roadkill or police ticket!
kotor
Never tryed that game. So I can't see. An RPG is good. But I don't want to level up in that game. No sir! No level! With the money you will be abble to buy technical parts so you can upgrade your technology, the car and the containment unit. But not a market like in sega genesis with a ol scientist selling an all made weapon, detector or stuff. You will be able to use the parts and customize it to do: or new items or an upgrade on the original item (without changing much its original details) by placing the object in the right place.
You will be able to walk in the firehouse from the basement to the roof… and be able to get under the car to do repair (sometime you will to use the joystick correctly to do a good welding or your car will broke on the road. Why not losing a wheel while you're at it!)
There will be also a room made only for research and study becose you will need sometime to think a little to solve a puzzle to help you find a weak spot to beat a ghost problem. Hey why not some enemy where you will need to deal by talking to the ghost! If you don't keep a right conversation, the ghost will turn mad and you will need to trap him. If you do it correctly, the ghost will simply vanish in the air.
I'll try to find more idea another time.