I want to start by saying this is not my idea, I could not find the original post so im just posting this to try to get the concept back up, so if you could maybe find the og post please post the link. I will throw some of my own ideas in.
Headhunters- An extremely difficult 2 player co-op mode that requires immense amounts of teamwork. This mode will Always have the iron,tough luck, famine, thunderstorm, cowbell, and boom skulls on, shielding will recharge a lot slower, legendary will always be on, each time your shield breaks your visor cracks, health bar will be present.
A variety of missions will be featured including generator defense, kill the vip, wave defense, point a-b stealth, escort, air support, warthog run.
Credits and would return in this mode, but very limited. The credit marketplace would include extra frag capacity, extra ammo capacity, emergency med pack(consumable), weapon type ammo(consumable).
Weapon type ammo would work in the sense as if you ran out of ammo on your weapon, and bought that weapons ammo type you could gain an extra magazine for that weapon.
Rewards such a armor,emblems,armor effects, and nameplates could be unlocked from this gamemode.
Missions would release weekly replacing spartan ops.
thoughts?