Well, Halo 2 is over 2 years old, and if you are like me, you are burned out on it.
The fact that im playing it on an HDTV doesnt help either since it looks bad (H2 doesnt support HD).
Not really complain, but a minor disturbance. I have 3 good friends who play GOW, so I would have had more fun playing the campaing all together with them. 4 player Co-OP is HUGE news.