...one of the things which arguably sinks the TNG movies like a stone (floatational Data optional!) is that they're all stand-alones.
I don't think doing stand-alone movies was necessarily a problem, but I admit I would have really preferred to have seen the stories more interconnected like the TOS movies were. If it had been up to me, the ninth movie would have started with the Enterprise emerging in the 24th Century from the time warp they used to return home at the end of First Contact. That way, the movie would not only feel as though it followed directly from the previous one, but they would not have needed to contrive some other reason to bring back Worf. He was already there!
Would that have made Insurrection better? No, but I still would have liked it.
I probably would have extended Picard's relationship with Anij into the tenth film as well. It hate it when love interests disappear in a single episode.