Meh. The more unified network of Xbox Live absolutely has very little bearing on the presence of a single player demo, though it has some bearing on a multiplayer beta. And really, while I subscribe to Xbox Live, I'm under no delusions over what I'm paying for. Which is online P2P matchmaking and getting demos a week earlier than Silver users. Each publisher still needs to put in a good effort to get good netcode, just like the PC and PS3.