I'd love to see a new Muppet Show, but I don't know what channel it would be best on. I don't know if ABC would be willing to give it a chance in network prime time, and I don't know what option would be best for cable. Disney Channel seems logical, but I'm afraid a Muppet Show revival on there would skew too much towards typical "children's entertainment" and not the all ages approach of the original Muppet show. I don't see how a Muppet Show would fit into ABC Family's programming approach, since all they air are soap operas and holiday movies.
The best situation for a new Muppet Show, in my opinion, would be a network that would be willing to let the show try and appeal to all ages and let the production team write without too much interference from commercial factors. Unfortunately, I don't think AMC is owned by Disney, but that's the kind of support a show would need to survive and thrive.