I've yet to see Nemesis.
Alas, it didn't get a very long run in UK theatres.
I think there are a couple of things that are bringing down the Starfleet Franchise on the side of the films.
The first is, there's nothing more annoying than going to see a film, and walking out thinking, wow, that was really like a 2 part episode. Unfortunately, I feel the bulk of TNG movies have fallen into that ilk. So much so, that I can't even remember what Star Trek IX was even called.
The second is the dumbing down of Starship Combat in TNG itself. The Original Series gave us Klingon Disruptors and Romulan Plasmas, but too many ship encounters were limitied to "Fire Phasers & Photon Torpedoes", no matter what race was involved.
DS9 recognised this, and through the Dominion War, was able to re-introduce some character to the combat sequences themselves, Klingons getting their Disruptors back & Feds having to "develop" the Quantum Torpedo in response to the Borg and the Dominion.
You want meaningful starship combat? Star Trek II: The Wrath of Khan set a standard that remains unmatched by anything TNG has yet to offer.
Ultimately, good writing and a terrific cast will take you much further than "revealing insight" into the myserious ways of the Borg or the Romulans, as Star Trek IV: The Voyage Home clearly demonstrates.
Regarldess, I'm grabbing a copy of Nemesis as soon as it comes out.
Azrael