Now, the request: if you can integrate the capability to specify and save custom isomorphic key layouts, ThumbJam will become the greatest achievement in the history of the human race.
Particularly, I would urge you to shamelessly rip off Musix -- http://shiverware.com/musix.html -- and extend it in a way that would allow me to, just for example, devise my own isomorphic layout for 17-edo and actually play it. The powers of these two apps combined would be astonishing, and I think it's much more feasible for ThumbJam to make it happen than Musix.
I would gladly pay handsomely for such an upgrade. If I could, I'd finance the development myself. History awaits!
