For ANH I would've liked to have seen more action from the Y-wings during the DS assault. They dont do anything until the trench runs. Some nice dog fighting to assist the x-wings would've been cool to see, along with strafing the DS surface and taking out cannons.
Same in ROTJ, except this time its the B-wings. They dont do anything after they lock s-foils in attack position along with the x-wings. And another thing that bugs me is when Lando tells everybody to "pull up", there should've been more depth between the fighters and DSII. The fighters look huge and the DS small during the initial evasive maneuvers. I think ILM did a better job with creating depth in ANH.