I would love to see a great hip-hop-themed pinball machine (with a censored/uncensored option) but I know the chances are slim to none due to the lack of interest in the majority of the pinball community.
With that being said, I'm surprised there isn't a Pink Floyd machine yet.
Also, I think Rage Against The Machine would be badass! Or even Nirvana! At this point, even Daft Punk sounds good!
We will always have the classic music pins (ACDC, and Iron Maiden (two of my favorite music pins).
But Let's get some new musical choices going!