All right, I'll agree with that. Really the entire major [spoiler]Yivo-as-analogous-to-Colleen[/spoiler] plot did very little for me. Though I'll certainly grant it's a whole new take on Cthulhu.
[spoiler]The Kif arc, while resolved by a very nearly literal deus ex machina, develops their relationship by having her sleep with Zapp -- and given Amy's devotion to Kif, killing him off is pretty much the only in-character motivation she would ever have for doing that. It tends to skewer a sci-fi/superhero comic trope by asking "Is it cheating if he's dead?"[/spoiler]
Every other major development is resolved by the end of the movie, but that one has the potential to have repercussions in the next two.
But it might not, given the (hilariously) almost-non-existent acknowledgement of BBS in this one.