I think it would be nice to have something other than rock and dubstep play. My only complaint is that there isn't a wide variety. Trying to please everyone is foolish.
I saw this interview where this guy explained how we, as humans, are programmed to enjoy repetition. However, what we enjoy more than repetition is the slight surprise when we become accustomed to things. I think that the radio would be great if it would offer a good surprise now and again. It would help us not only appreciate the new music, but also sharpen are skills are our brains would become more alert. The new rhythms would get our mojo working, so to speak.
So in summation: Don't please everyone, surprise everyone.