I'm in the camp of not expecting much, and then being blown away.
The first thing I was surprised with was that it had a fairly cohesive storyline. I definitely didn't expect that out of a dance troupe.
The second thing that really made me love it was that it turned out to be more of a variety show rather than just dance numbers. Between the shadow play and the one dude that could do everything (unicycle, play drums, nunchucks, etc), there was a lot to watch at any given point.
As far as I'm concerned, I'd be fine if they did a few return appearances, just not with the same show.