Though the game doesnt look as great as people make it out to be, it doesnt matter cause i'm also for a good story line (like starcraft). I liked the original's story line, and a continuation is always good even if it ends at a cliffhanger.
So i'll be playing it when it comes out on PC also.
Oh I also heard that the online PC gaming community has droped by 30% when halo 2 go released.