Good stuff, its always good to see people taking an interest in coop. I think H2V being the only Halo game on PC with ANY kind of functioning online coop in a complete campaign (HO has decent sync, but no actual singleplayer) will be a point of interest for many future community members.
BTW, I love aggressive T-posing brutes. They're horrifying in a weird, glitchy but grounded way.