CoD players complain at a lack of change. Halo players complain about change. Why not switch games?
Halo is too slow for my taste. I like how they tried to speed it up but I'm not a fan of taking 5 shots to kill someone as well as being on the motion detector at all times unless you are crouching.
Change those two things & I'd switch in a heartbeat. Only pro that Halo has at the moment is how it doesn't have any connection issues for me. --- When I read about the evils of drinking, I gave up reading.