What are other genres of GH/RB that you would like to see? I want to see a Broadway Guitar Hero, myself.
As for spin offs, I think a Violin Hero would be an interesting premise. A total of 10 buttons, like the usual GH/RB guitar, but split in half for a low and a high. Or the usual 5, if 10 wouldn't work. The bow would be attached, and like the actual instrument, simply running the bow up and down plays, and longer notes would require sustaining a single stroke while keeping your fingers on the strings.
What else could work?
As for spin offs, I think a Violin Hero would be an interesting premise. A total of 10 buttons, like the usual GH/RB guitar, but split in half for a low and a high. Or the usual 5, if 10 wouldn't work. The bow would be attached, and like the actual instrument, simply running the bow up and down plays, and longer notes would require sustaining a single stroke while keeping your fingers on the strings.
What else could work?