Just saw it. I actually thought it was ok. Better than I expected. Hard to tell from just one episode, but there's potential there.
Basically, there's still the variety/ late night show going on (Starring miss piggy) but this is more centered on the backstage comings and goings, and not in real time with the show.. More in prep of. Think Studio 60.
We'll see how it goes going forward, whether it finds a good rhythm or not. The first episode was mostly just setup. But it got a couple of good chuckles.