4. A script that felt like more of a fun nostalgia trip rather than a pity party about the world forgetting the Muppets
The movie wouldn't have had
any impact if it didn't. This
needed to be a "get the gang back together" movie to relaunch a film franchise killed by dumb gimmicks of forced sci-fi (because Star Wars episode 1! That's why) and boring story retellings. And quite honestly, the world forgetting about the Muppets
until the movie came out was a sad reality of the franchise, though VMX was a ratings success.
It's better to have an establishmental tone to the film franchise. That's what TMM was. A movie about how they all got together the first time. Bringing them back together basically says, now we're going to do stuff with them. Plus, it is sort of a disconnected sequel to all three of the first movies (which actually don't fit, but...) with the plot being driven by the end of MTM (which the *&^% editing got rid of), basically retconning the fact that the last bunch of movies didn't happen.
In short, they basically say Gonzo being an alien never happened. That's a perfect A in my book.