Collectors of antiques or Star Wars things in general may, several decades from now, bestow upon them some sort of collectors' status. Until then, the best you can hope for is an irrational craze, like the early 90s comics speculation, but I don't see that happening. The fact that DVDs can be copied cheaply, perfectly, and by anyone kind of suppresses the demand for "rare" discs.

And yes, I bought multiple copies of Adventures of Superman #500, and I still have one in the unopened poly-bag. Never did get a bagged Superman #75, though I once saw the platinum edition hanging in a store in Tennessee.