Yeah, I'd really like some variation of territories, where you have to hold multiple objectives. Generator defense went a bit in that direction, but it ended up flawed and inflexible, and there's so much more that could be done.
I'm still saddened we never got a Firefight game type where the ammo rack was removed. That alone would encourage map movement.
I like the Invasion additions of Objectives but they just need to make way more variety for Halo 4. Just arming bombs gets boring fast and just collecting the core at the end also gets a bit boring. Just make more variety!
Also, add a Battlefield Conquest style mode. Thanks!