I'll touch lightly on the SpOps talk. I agree that 343 has been a little vague on what the gameplay entails. It does seem like, from what we've been shown, that the customization we've had with Firefight will be gone in place of a more controlled, campaign-like experience. I do expect to see some very Firefight-esque missions down the line (if we haven't seen 'em already).
I've never been a huge Firefight fan, and that's not Halo specific. I haven't encountered a "horde mode" in a game I've liked. I expect to enjoy SpOps more if not for anything but the promise of regularly-released new missions. However, I really like the idea of customization for a gamemode like SpOps. I'd probably never touch it myself like Reach's Firefight options but it'd be really interesting to see what people come up with. Alter the works: what enemies appear where and when, skulls (Does campaign have skulls? Will there be skulls in SpOps?), starting weapons for the player, and so on.
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To all GAFPAXers:
While all you fine, lucky folk will be out enjoying the lovely atmosphere of Seattle and playing Halo 4, because of work I'll be subjected to the chorus of singing, chanting, and screaming of college sorrorities over the weekend (and tomorrow). I'm depending on you guys to dispense plenty of information and impressions, while recounting fantastic tales of your journey to help me through this difficult time. Distract me.
Help me get through this. Please.