NEMESIS is just about the biggest piece of crap in The Next Generation continuity. All of the Next Gen movies are guilty of centering on Picard and Data instead of dealing with the ensemble; sure Stewart and Spiner are the best actors of the group, but I really want to see more about the whole crew and their ongoing journey.
But beyond that, they couldn't just focus on how great Picard is, they had to clone him to reinforce to the audience how critical he is to the universe AND operate as a foil for the real Picard... hell, they even "cloned" Data by the end of the movie as well. I also recall there was a pretty dirt simple solution to avoid Data's sacrifice involving the transporter badge, but I'll be damned if I'm willing to watch the movie again to refresh my memory.