-Grievous as a cartoon CGI character (well, at least his death is decent);
-“Another happy landing” :’(
-Ridiclous lines during battles (“UNLIMITED POWER”, but also every single one in the confrontation between Yoda and Palpatine). Though they’re probably meant to be like that, homaging the classics from the 50s, they’re totally out of place in Star Wars;
-Anakin’s sudden turn to the darkside and his decision to turn against the Jedi;
-“We can rule the galaxy…”, because he never expressed such a lust for power before;
-Padme’s death, because, though poetic, retcons Leia’s statement in ROTJ;
-NOOOOOOO, and I don’t care if it was a tribute to Frankenstein!