I wonder if Lips is actually starring in this or if he's featured among other characters (like if it's actually starring The Electric Mayhem). Dave Goelz mentioned that Lips had a line in something the performers did in winter 2013 (which we assume was a deleted scene from Muppets Most Wanted, but we don't know for sure) and Steve gave him such an impressive delivery that he's now comfortable voicing the character. Dave said that he couldn't wait to see what was done next for Lips (and despite that, everything the character has been in since have had him silent, he didn't even get a line in the Lady Gaga special).
Where are kept all the muppets? there may be hundreds or thousands!!! did they change the storage after Disney bought them? and sesame Muppets and Jim Henson puppets? thanks!!!
Craig Shemin has said that Disney doesn't archive acquired properties, so The Jim Henson Company Archives still has all pre-2004 Muppet archive materials, including puppets (which is probably why the last two movies do have "puppets by Jim Henson's Creature Shop", since it seems like some background characters from those movies were the originals), scripts, design sketches, and master tapes (I hope that's not the reason so much isn't on DVD). I assume that Puppet Heap has current Muppet puppets in storage. The Sesame Street Muppets are also stored at the workshop, since Jim Henson's Creature Shop continues to build the Sesame Muppets.