The Special Editions always make me sad.
The first intent was to go back and fix problems, correct colors, remove garbage mattes, clean up general mistakes and things that are artifacts of the time. This is GOOD!
Next, they added in some things like CGI X-Wings and cleaned things up that were limited technologically. These are OKAY. Not necessary and mess with the integrity of the historical product, but they are okay additions, though they have not aged so well.
Then, they added in junk that RUINED the film and really made things look bad. Extended scenes, cut scenes that were cut for a reason, elements to make things look grander. These in most cases have become eye-sores. Jabba added to ANH. Unnecessary, ruins the mystery, AND was terribly executed!
The perfect Special Edition would be first, a restoration and cleanup of technical issues and problems of the original movies, fix colors, sound, etc. This would then be the ORIGINAL version. Then for a Special Edition, some deleted scenes could be included (if up to the same level as the rest of the movie), some CGI tweaks and added elements if done VERY well.
I get the sense that things were cut originally because of tech limitations, story, etc., but when Lucas added them back in, he forgot why they were cut in the first place. The Jabba scene always comes up. It isn't needed and it was done very well. The same level of scrutiny was not applied to the original cuts and special edition cuts. No way that Jabba craps gets through on a legitimate Star Wars production schedule.