The sound remix is obvious though - I consider the re-mix better, but I'd still like the original preserved.
American Grafitti was alterered more noticeably. Check out the sunset during the opening sequence at Mel's Diner. My older VHS copy has the original sunset, but my DVD has the ILM CGI sky, which now looks like a sunset on Tatooine.
This begs the question though - is there a widescreen version of the original THX-1138 anywhere? I have it on VHS but it's pan and scan.