I think Walter as the over eager newbie Muppet fits in well without it being a direct sequel. I'm also fine if the next movie deals with them being a troupe of performers and still put in a new plot... as long as they aren't living in a boarding house. If you look at the last several projects (Minus Wizard of OZ thoughe ven there to some extent) the Muppets have played the Muppets and I'm okay with that. Though I'm also fine with them playing themselves but in a different non continuity situation similar to Muppets take Manhattan or the Great Muppe Caper (Caper being a good example of this idea working). I just don't want them playing characters like in the Based on books movies. A direct sequel is not a good idea but if handled correctly might work...but its a long shot.