Re-edit the lightsaber duel to give it more pace.
I was hoping you'd be addressing this. When experimenting with the duel for Starkiller Ranch I found that it improves dramatically by just cutting out the parts where Vader and Obi-Wan are stumbling around poking at each other. Something else I noticed was the amount of reversed shots, and not just obvious ones like Vader's chestplate. Be careful of the duelists changing hand position on their lightsabers, as they go from right-handed to left-handed grips and back again throughout the duel.
Very exciting news about the lights on Vader's chestplate! There may be nothing that can be done about his armor, but the lights will certainly go a long way into bringing continuity to his costume.
Changes to the gunport sequence are more than welcome! I've always found the TIE battle rather bland; the Falcon just hangs in space while a whopping FOUR TIE fighters buzz around it. I'm sure it was very exciting back in '77, but after seeing what spaceships could really do in ESB and RotJ, it's dare I say, boring.