Though I've been a bit too busy to take a "Halo day" off this week, I have spent a bit of time playing, and I can say that I'm pretty happy.
I really like the "get out of this room" waypoints that pop up when you get stuck someplace - those are an elegant solution to the problem.
And I'm also like the multiplayer, though not knowing the maps is causing some issues ('cause otherwize my mad skillz would rul3z).
But, I've been wondering what is to come in the future. LoadingReadyRun has provided a preview...
(and you can find me as Triabolical)