My two cents on the film:
They could've done it without Jason & Amy entirely, just showing a montage of Walter growing up with an anonymous human family. It was too human-heavy in spots, seeing the big musical numbers with no Muppets present seemed odd to me.
I'm not crazy about some of the new voices.
Not sure who's building the puppets now, but some of 'em didn't look so good.
HATED the villain. What a boring performance.
Not enough big-name celebrity cameos. Remember all the BIG stars who were in the 1st film?
I rented it & watched it, don't think I'll be buying a copy.