I love the idea of Pokemon as a theme. Not only does it attract all of us millennials to the game, but there is huge potential in the code. Travel the world and collect 8 gym badges and face the elite four. Try to collect all 150 pokemon. Something like X number of pop bumper hits could make a wild pokemon show up for capture (think walking in the grass to randomly start a fight). Capture a full team of pokemon for a 6 ball-multiball. Swap pokemon in and out during battles for buffs and super efficient attacks, etc (think of the light shows)
It's a dream theme for me. In a similar vein, I think Dragon Ball Z has huge potential. It may be a bit more palatable for some collectors since it's basically all about kung-fu with ridiculous over the top wrestling style characters and storylines