C3PX probably is right and a new petition wouldn't make a bit of difference in the grand scheme of "Star Wars on blu-ray" being all that's really necessary for people to go out and buy it.
However, I am hoping that Lucas - seeing the kind of treatment some of these catalog titles have been getting for their BD debuts - ends up doing the right thing. I think he could AT THE VERY LEAST manage to make each of the original movies a two-disc set with the (hopefully final) newest cut on the first disc and a remastered original cut on the second. I really don't think that's too much to ask and in fact at this point I think it would be silly not to include it.
Unless of course he thinks the money he'll be saving by not having to stamp out that second disc will outway the money he'll be making from all the OOT fans who will only be interested if the original version is included. Otherwise, omitting the OOT makes no sense.