This has probably already been said before (multiple times 
), but really, I think 343’s got something incredibly good going on!
The gameplay shown so far looks incredible visually and highly functional. The little things everyone was worrying about (Promethean vision, Ordinance drops, etc.) seem to work really well with the game, not too overpowered or anything. The armor abilities are looking good as well, didn’t see any gamebreakers like Reach had (allegedly). The armor mods seem pretty reasonable as well, no gamebreakers there either. And the helmets look awesome, they all seem to have their fans.
Campaign looks INCREDIBLY incredible, the Promethean constructs look like a refreshing new foe to fight, and, with all the hints so far in the trailers and novels, the story should blow everyone away.
Spartan Ops sounds like an awesome idea. I mean, two campaigns! Two HALO campaigns! How’s that not awesome?
And that’s not even mentioning the little things, like the new weapon sounds, the more “I’m a 1000 lb. cyborg killing machine” feel, new vision modes, etc. And none of this counts the no doubt sweet additions they’ll be making to Forge, Custom Games, and Theater!
This should give all those other copy-paste shooters a run for their money. Or their fans’ money, anyway, ha. Anybody else feeling good about this?