I'm telling you MTI is next. Sadly that is one I will never buy no matter how many bonus features are on it.
I hate to go negative on this, but...
Yeah. Why do you think they did MCC over the other 4 movies? It's not so much that it's a Muppet film, but it's a Christmas film first and foremost. They just want to get the Christmas movies out there so they can sell them during that period between Thanksgiving and 2 weeks before Christmas when Christmas special movies sell.
Now, I really think Disney has the vision to release the rest of the films. They do incredibly well on home video. But I can't stop thinking about a few years back when they released the soundtrack to MCC and never any other Muppet movie soundtrack ever for the same reason. I really hope this isn't the case, and the rest of the Disney owned Muppet Movies get that re-release for Blu-ray collectors. The movie was a success, albeit a mild one, and even when the film was still out, people were grabbing up the old movies that were out for years. If they're smart, they'll put all the movies on Blu before the next film comes out.
As for the show... I really can't hold up any more hope for that. Unless that thing about having to renegotiate music rights sort of owned by Michael Jackson's estate is true (apparently, his estate is run by JERKS and they're kinda pinning the family against each other... there's REALLY going to be progress with that estate), they would have, could have, and SHOULD have released the fourth season by now. They clearly don't, but Disney's allergic to putting TV shows on DVD that don't involve them being cut up into 90 minute movies on a single disk. Not even with popular shows.