Well, I didn't buy the Collector's Edition (huge mistake), but I'd be more than willing to upgrade to CE and pay the difference to get the Soundtrack and Angelic Wings. Those two alone would be worth it for me (the skull and Diablo 2 plus Expansion would be nice, too, but I already have it, so...).
Best case, they'd allow people to buy parts of the CE, so they can get the things they really want.
And I really hope they will offer it, later on, because it would be nice for those who didn't have much money to spare at the time and still bought the game. What are you gonna do with a CE now, when you already have the game? What to do with the key?
I can't really see owners of the CE being against it, really. I understand that you guys wouldn't want people to get for free what you paid a lot of money for, but as long as we pay money for it, too, it would be fair to give us the possibility of upgrading, right?
To go with the "house" metaphor: As long as your own isn't crammed between two others and your property is big enough (in the virtual world, it almost certainly is), you can always build the garage and pool later on, if you pay for it.
Edited by JulienJaden#2956 on 21/05/2012 14:57 BST