I am open to suggestions
Ohohoho, then you'll be getting a nice hefty list from me in addition to any other requests you get from others... Not sure what would count as crazy, so I'm just gonna list stuff and you can pick some, all, or none based on what you think you can get to your desired quality.
-Mysterious Mountain(MoF Stage 4 Aya theme)
-Fate of Sixty Years(PoFV Shikieiki theme)[This one's probably a bit/a lot much, haha.]
-Cosmic Mind(UFO Stage 6 Byakuren theme)
-and lastly, Touhou-wise...Candid Friend(MoF Stage 3 Nitori theme)!
Since you mentioned Final Fantasy as well, here's one request in that group as well.
-FF4 boss theme
Apologies for the swarm of requests, but...figured it's better to get a bunch out now rather than ask one after the other, this way you've got plenty of things to pick from if you don't want to do one/more/all of them. =p