I'm sorry, but the argument that the OT are work prints is just BS. First of all you don't release work prints for the general public to view. Those are for the director, studio execs, editors, sound editor, ect. That's why they are called work prints. If I remember correctly, and please tell me if I'm wrong, but the OT was released into theatres as finished, completed films. The SE are more along the lines of a Directors Cut, but then that doesn't even trully describe them. From my understanding, a Director's Cut is a version of the film that has re-edits of scenes, trims, and the possible insertion of scenes that were originally filmed but for one reason or another were cut from the film. In that case, the only scenes that were cut from ANH and reinserted are the Han and Jabba scene and the Luke and Biggs scene in the Rebel Base. Everything else that was added to these films is BRAND NEW footage that George has 'decided' that needs to be there in order to show his original vision for the films. Fine. However, since the OT was released in theatres these are NOT work prints.
Secondly, no one is arguing that the clean up of matte lines, boxes around the ships, ect are the problem with the SEs of the movies. What everyone dislikes is the complete removal of special effects or models and replaced by CGI. Even the inhancement of certain scenes with CGI is problematic at best. Like the Sarlaac pit, Jabba in ANH and the Han and Greedo scene just to name a few. For myself, most of these changes were just unnessesary and useless while others were just plain dreadful. You can preach until you are blue in the face, but that Jedi Rocks number in Jedi sucks. Period.
It those kinds of things that make the SEs not so special. Finally, the only reason these films are 'evolving' is because GL has a bug up his ass. They were just fine for 20 years. The man has been smoking plant vapors.