Advice desired

I’ve been trying to make this as complete as I can but still feel that something might be lacking- taking into account the systems that I own and that I don’t really want to try to find space for any more (i.e. no SNES/NES/Master System games), my ability to play non-PAL games (the PC Engine, the Saturn and the 3DO are the only ones that can do this) and the variety of egnres already covered, what would you say are the games that my collection is noticably lacking?

PAL Gamecubes can play non PAL games with a Datel Freeloader or Datel Action Replay (which are created in Europe no less).

Other than that, I can’t make any specific reccomendations, but I’ll point at my collection and you can dig through and see if I have anything you missed: