Characters wander in and out of the story with little logic, the Dominion plot line just kind of trails off, and all of Starfleet vs Starbase 1 was kind of silly.
But Shaw is an amazing character, Vadic is fun to watch, the TNG crew got a far better send off than Nemesis, and the acting is fantastic. The fanservice of seeing the Ro, Shelby, Moriarty, and the E-D again was also fantastic as someone who grew up watching TNG with my dad.