I guess I have to be the party pooper.
I thought this movie was too long with too much...stuff. A nice trimming of fat would've done wonders, from where I was sitting. The story was about Jude and Lucy, right? With Max introducing them and being a foil for their discontent with Vietnam, right? So who the hell were those other characters? Prudence was in there so they could sing Dear Prudence, but the movie would've lost nothing beyond that song had her entire character been removed. JoJo and Sadie? Also not necessary, but JoJo allowed for the Joe Cocker cameo, which was by far the best part of the flick, so he gets a pass.
The problem is not that there was too much going on. It's that I felt that we were supposed to be invested in these interweaving storylines that all come together in the end, but it really seemed like one of those complicated looking knots where you pull one string and the whole thing is actually very simple. Just my take.