Oh, that's an iconic scene. Good call)
I'm actually haven't played many rhythm games before, so my feedback below can be a bit misleading, but anyway..
During the play I found that my eyes are constantly fixed to the moving strip at the bottom, while my inner film buff wanted to watch vandancer moves.
I didn't feel any sync with my input and dance moves, should't they be correlating in someway? Like I missed a music bit, and dancer lagged behind or something.
I wish the dance would smoothly transition into a bar fight. Enemies could come from left and right, I would press <- and -> to punch them, down arrow to do a famous leg-split and evade hits, up arrow to do a double jump kick, e.t.c This way my eyes would be on the scene and enemies will act as rhytm markers.