I know AoTC and ROTS have a hard time restoring the film versions of their theatrical release…
Not ROTS. The only difference between the theatrical and DVD is a cut vs. a wipe. The DVD version was shown in HD so it is available, and the BD has the proper wipe, so a reconstruction would be very simple.
Nope. The wipe, different Wookiee houses during the battle, different audio including e.g. added stormtrooper voices when they attack the tall people …