You have to face the fact that, even whatever you think, Disney has pulled this off. They seem to have made a Muppet movie that makes the characters relevant again and stays true to the '76-81 spirit.
Seriously, one reason I was giving it the um, grudging benefit of the doubt was that most of the word of mouth I'd heard seemed to conflict with those early horror stories:
Instead of a near-three-hour cut filled with buddy-cameo Lady Gaga duets with Piggy, most reports have the movie at a smooth ninety-minute running time, assure fans that "Really, Segel isn't in it that much at all!", and appear to be baffled that all those 00's celebrities just seem to be walk-on's without doing anything.
I suspect (and not without a little bit of hope) the longer original cut of the Big Show at the end may have been Segel's own attempt to put him and his friends in his own vanity variety episode complete with guest numbers, and Disney wisely de-Segel'ed the movie in the editing room to concentrate on the story and brand franchise they were trying to sell. (Whether that's one product of the Pixar story writers' Tron Legacy-style last-minute script-rescue tweaking, I don't know.)
So, yes, while we don't "have Segel to thank for bringing them back", unquote, we may potentially have Disney to thank for keeping it from being distracted.