Well, I'm not surprised it's just the SEs, but I have to say that I really am disapppointed. I know that Lucas said back in '95 that the originals would not be released again, but since that time, DVD has become something of an archival format in the minds of many film fans. It would have been great to include the original versions, even if it was only for historical purposes. Lucas is so big on film preservation, I thought he would realize that.
I don't despise Lucas, I don't think he's crazy, and I don't think all he thinks about is money (he does have a very good business sense, but there's a difference). And I've heard a lot of people that actually know him call him a pretty nice guy. I also completely respect his right to do whatever he wants to his films (even though he didn't direct Empire or Jedi.
However, I just honestly don't like the SEs. As others have suggested, even though the changes seem minor, they significantly alter the tone of certain scenes, and they actually make the trilogy as a whole seem a little more...well, cheesy. Some of the new effects for the SEs are already dated (although they may be cleaned up for DVD), while the original effects, though low-tech, hold up very well for a film made over a quarter-of-a-century ago.
As I said before, though, it's Lucas's right as a filmmaker to change the films. But because the films were as they were for 20 years, and became classics that way, I just feel that those versions should be preserved as well. And that is the opinion of a great many fans. A "small but vocal" minority it is not. Many "normal" people also much prefer the original versions (I know several of them). And as others have said, James Cameron and Ridley Scott have gone on record saying that they prefer a certain cut of one of their films over another, yet they allow both to remain available.
Once again, Lucas has every right to do what he wants, but it would be awfully nice of him, and it would show a lot of respect to the fans, whom he claims to treasure, if he would allow the versions that the fans made classics to be released.
I'm not disappointed that there is only one disc of extras, or the format in which the films are being released. I just want the original versions.
I probably will buy the DVDs, but I'll have to think about it, and that is what's weird about the whole thing: I never thought I would have to think about whether or not I wanted to buy Star Wars on DVD.