The only changes to Chewie I'd want are a more articulating muzzel and maybe some changes around the eyes. Larger Iris and no whites to appear more dog-like might work. Otherwise, ESB-ROTJ Chewie is perfect. I'd thought of scenes of that hulk saving the gang and fighting monsters. I didn't want to take too much from the story arc. I didn't pursue other possibilities very far (83-84). For Han, reminders of his shoot-from-the-hip style and even when quiet and peaceful he can be a lethal weapon sort of character. Luke and Leia essentially the same as in ANH.

The TIEs seem faintly insect-like. The ST helmets always reminded me of grass-hopper heads. Like to keep that sort of thing through any changes.

One thing I'd always wanted to see was a full theme for the fleet preparing to jump in RotJ. Maybe something like the William Tell Overture meets Flight of the Valkyries sort of thing.

For extra TPM, Ani might rescue the group from the storm as well. Ani might jump onto the hovering probe, be carried up a bit and fall flat after he disables it. I like the pageantry of some of the pre-race presentation. I don't know how to work that pod-race sequence in.

In ANH, originally a shallow angle climb. Revised to very steep to get good stuff near ship. Thought engine could overheat.

I'd like to see the new sequences produced in the English studios as much as possible. They infuse the films with their own character. That depends on costs and difficulty, I know. Later :)