I think JJP needs to do something other than a music pin for the next couple of pins. I’m out on Toy Story. As others have said, it’s too much of a kiddie theme. I’d be into almost any horror theme, done up in full adult mode.
I also saw someone else say Dragon’s Lair. I remember dumping a lot of quarters in that game as a kid. There’s a lot you could do with that theme, but I’m not sure it’s popular enough. Plus, they have already done The Hobbit with Smaug, which is kind of similar.
How about a pin that is Chapter based rather than mode based that saves your progress? The chapters would be much more robust than modes and depending how you do in one chapter may lead you to one of three chapters next for example. Kind of like a choose your own adventure scenario. It would take a lot of programming, but it would be all programming. That would syncs up with something like a Dungeons and Dragons.