If the last movie was any indication, I don't want too many sketches lifted from The Muppets Show. The last film tried to get as much Muppet film and show feel into a 90 minute film as possible, and that worked for that movie. This film seems especially plot driven, and too many Muppet Show skits would edge something out. I'd like to see parts of sketches already in progress or in montage form. Definitely some rehearsal/backstage bits to further the plot.
But I'd rather see full on Muppet Show style skits as viral videos, and it's a shame they haven't done more of that. A TV show is out of the question for some reason, but considering they brought back Arrested Development as a Netflix original series, no doubt that some more original online material would work wonderfully for the Muppets. If they could heighten that presence soon enough, it could spell better ticket sales for the film.