Lucas basically thinks the 1080 master is good for all time right?
This is the same man who belongs to a film preservation board,lol.
The chances he will undue to the damage done to the original negative on the 1997 special edition are most likely zero percent.
A real restoration as Robert Harris has said should not cause further damage to the original negative and the film must be viable for future theatrical releases. Damaging the o-neg for a video release is stupidity.