Alot of SNES RPGs have ROM editing and hacking programs that allow full modding of the games, from just the total visual (Hyrule Magic for Link to the Past) to completely rewriting events, and making your own copmplete new game (PK hack for earthbound.)
That was quite the run-on. Anywhom, who knows who has the time and dedication, but you could theoretically make a Ghostbusters game using these. What does everyone think of this? Has it ever been suggested before?