The original Trilogy, in it's original theatrical cut, are up there with the classic movies of all time, and as such should be made available in whatever format becomes available and dominant in the future if only to preserve the film for future generations, of course there will come a point in the not too distant future where the quality of the format will actually be equal to or surpass the best quality presentation possible, in that case the quality will not advance but the film should still be released on each successive format and made available to the consumer, providing the demand exists. It's up to the consumer on how they choose to keep up with new advances in technology. Where I draw the line is at the multiple releasing of the same title on the one format with only slight variations.

Considering how George has always been so strict with how his films are presented theatrically, making sure that the films are presented with the best quality picture and sound, It's a shame that if you want to see his finest work the best you can do is watch a 9 year old video-cassette or Laser disc ( or a bootleg DVD-R of a laser-disc...... but that of course would be illegal mmmmm.)
and seeing as laser-disc has gone the way of the dodo, and VHS is in it's dying days, there aren't too many options left open to the fans and loyal audience who made the films a hit in the first place.

as far as I am concerned as long as the first (deifnitive) version of the film is available in the most up to date format, George can keep tinkering (spoiling) with it to his hearts content with Special editions, it's up to me where I draw the line in terms of keeping up with each rehash.