This film would've been much better had it ended earlier...
I enjoyed Mr. Jealousy, but thought that there were just too many endings.
Ideally, Baumbach should have cut the film when Lester went to the University of Iowa. That would have given enough closure, while allowing for some speculation. Unfortunately, he decided to linger. And this cheapened the body of work.
Also, I felt like this film didn't know what it wanted to be. Many scenes mirrored the great auteurs of the French New Wave (e.g. still captures, narration), but others had a more flighty tone that harkens to what we traditionally see as "nineties" cinema. Some examples are the admittedly "wacky" manifestations of Lester's wandering thoughts.