Checking in-game auctions from a mobile phone has been on our MMO wishlist for some time -- Live Anywhere will enable that, and other immersive features. Levelling up crafting skills via casual mini-games; chatting with guild leaders via PC or phone-based VoIP; sending in-game mail and IM from normal mail and IM clients.
We'll have to wait and see if Live Anywhere will support more unification, such as matching friends lists and clan systems both in-game and outside it, but there are definitely some really cool possibilities that this vision opens up for MMOs. It's up to Microsoft and developers to really deliver on this potential.
