I wouldn't expect new features (rather, ones that were left out of the game) when old features don't work (file share search) about a month after release, and then there's the current debacle of specialization codes that they couldn't get right yet put the blame on the community for. As a company, 343 isn't admitting to any problems and is taking its time fixing things that should have been working before the game launched. Something like campaign matchmaking just seems so far away from something that they would actually do.
Invading world of the guilty as spirit of vengeance The guilty pay the price. I hate Square-Activision's FFXIII and its slew of cash-in spin-offs & sequels