I know they shot the ships on film, and that's nice and all, but what about the evasive maneuvers when the ship simply sits there, the same 5 or 6 shots of 'standard orbit' or warping past? Those might use a nice physical model, but I would seriously want them to change those out for variety's sake and to give viewers something more than simply a cleaned up image.
Yeah, and why does Picard have to do the same stupid two-finger-pointing gesture every time he says "Engage!"? They should CGI it so sometimes he flips his hand, like Kirk, or gives the helmsman the bird. In fact, why have him say "Engage!" all the time, too? After twenty-five years, the fans are bored of that. They should get an impression artist to come in and loop over Picard's lines, so sometimes he says, "Punch it!" or "Let's burn rubber, baby!" or "Pedal to the metal!"
You know, change things up a bit. If I'm going to be buying a digitally remastered version of Star Trek: The Next Generation, the last thing I want to see is Star Trek: The Next Generation.