Makes you wonder what they've been doing since Halo 4 and if they've spent all that time on less things.....
I think the theory that the original plan for the solo chief campaign was scrapped and remade with a focus on 4-player co-op has some truth to it. I just feels so utterly rushed. From the way that revives affect the difficulty balance, to the fact that teammate AI is utter garbage, to pointless, shallow walk-around-and-talk missions, to the fact that the grand sum of their co-op focus was levels that are essentially wide-corridors with one branch housing a power weapon, and boss battles that repeat the same trite 'distract the boss while your buddy shoots him in the back' mechanic.
Why they hypothetically made the change in direction, I don't know. Maybe as a response to the popularity of Destiny, or as a means of trying to make their cross-media nonsense with the TV series starring Locke more important, etc.
Plus, they seemed to really bank on Warzone being a mode that would appeal to BTB fans AND Firefight fans (because of the big AI enemies). Which is pretty hilariously dumb.
"Instead of multiple options that cater to a wide range of tastes, we'll give you one option that won't satisfy any of you as much as the modes you knew and loved. We're visionaries. Oh, and last-shot kills bosses, so don't bother with teamwork of any kind. Have fun!"
