I've never seen the original versions. I don't think many people have since I think they were all altered in some minor form or another as soon as they hit home video and TV.
I'm have no doubt that 20th Century Fox will sell the rights to A New Hope to Disney. Just surprised that Disney hasn't bought it off them yet. Once this new trilogy is over, I think we'll be getting a box set of everything. Prequels, original trilogy in theatrical form, the most recent remastered version of the original trilogy, and new trilogy (+ Rogue One and maybe the Christmas special
).