While I am a fan of his work, both in How I met Your Mother and his films, AND I appreciate that he is a huge muppet fan and will probably do them justice.
I really don't think having a human as the lead is a good idea. It definitely works to have a human play the villain, but I think that the Muppets can and should hold their own as the protagonists.
While it may have worked in past films; MCC and MTI, the muppets were always playing characters, not themselves. I believe a true Muppet movie should be centered around the Muppets.
If the news story is true and the script is Jason is trying to rally the Muppets for a show, in my opinion, Kermit should be the one to do so.
Humans should be limited to villains, extras and cameos in a Muppet film.
Thoughts?