So what makes RB better than the granddaddy of this genre? Innovation and new features, right? People wanted to play different instruments, and so rhythm guitar was added (something we don't have now) as well as bass. I guess people didn't find them so "boring" a few years ago or they wouldn't have requested them.
Then, when the concept of a full band game was announced, we had all these Luddites talking about how impossible it would be to fit two more tracks on the screen. I guess they were just short-sighted.
Now, when innovation has proven to be the factor that makes a rhythm game competitive, we have these same backwards people fighting to maintain the status quo. Instead of embracing the new possiblities that different instruments could bring, they argue against them.
Tell me again who's regressing?