Even designing a special event would be more fun I think, like some celebration in-game of sorts. I don't really need items at all, I more want the experience of some milestone passed.
I agree an in game event to commemorate the 2nd anniversary could have a lot of potential for fun for the community. A lot of other mmo's have them and I have always enjoyed myself during those events.
Just be careful how you word that though. Saying you "want" something around here quite often gets you slapped with the "self entitled" label by the local forum police / thread derailers.