Hrm. I could care less about the technicalities, engine, fancy lightning effects. The whole 360 v PS3 graphics thing needs to end, it's tiring.
I'm all for the split screen online multiplayer, that no other game seems to offer. To me, the Halo games have always been more about fun and the overall experience than anything else, something I appreciate, as too many games nowadays seem to put all focus on graphics.
The armor abilities sound interesting, I'd like to know more about them. After playing so much CoD, having a sprint would be awesome.