Personally, I do not want anyone being hampered because they could not afford the limited edition. So getting exclusive content means that you are excluding some people, something which I always found icky. Plus we have been told that we are going to get rewarded for playing the game, not for the size of our wallets. But I tend to forget sometimes that for the developers this means more funds to develop more stuff, especially when they slap down a 100 dollar/euro pricetag on limited edition versions of the game.