Has anybody considered that the Han/greedo change in the 97 SE was a rating stunt to keep it at a PG rating, because it would have to be re-rated for most theaters to run it, the SE's were have been considered different movies than the ones that the MPAA of 1977/80/81/83 had rated.
The existing scene would not have gone over with the 1997 ratings board as it did with the 1977 board, and Lucas begrudgingly changed it to keep it PG, the same way he showed the burning bodies of Owen and Beru Lars in 77 to get a PG rating.
Just a thought.