i think its a little unfair to say the new Muppet movie will fail just because Segal is in it or involved, we know he is a fan and his his heart set in this project, and just because some of his other movies are adult oriented doesn't mean he cant do a light Comedy either. i myself have a dark side of comedy but i love the muppets to death
and even my Superhero comic book dips into some dark stuff, doesnt mean my puppet stuff will fail because of my other work, or any other Project, Whats Your Number? the movie i did in june that's coming out this September is Rated R, and yea its puppet poop jokes but my work shouldn't be judged based on that
remember if it wasn't for him we wouldn't even have a new movie to talk/love/complain about, and everyone would be complaining about how there is no new muppet stuff
if anything Segals presence is going to bring those who would just pass off the Muppets as the next dumb kids movie