Been playing War Games for the past few days. Been helping out with the 1,000,000 challenge that was put out for the ARG that is going on for this game. I have to say that I'm impressed with the improvements that have been done. Being able to build my own loadout is a nice. Something I was hoping for in Reach, but never came to be. Some of the new armor abilities and packages/perks are also a nice touch.
As far as game modes are concerned, I've been mostly playing CTF. I dabbled in dominion (which is fun), flood, and oddball a bit as well.