So, ME3 Co-Op is amazing still put about 6-7 hours into it again today and it looks like ill have something to play till Halo 4 comes out.
It also got me thinking.
Firefight 3.0
Objective waves (CTF, VIP(s), Assault, Territories, Infection?)
Multiple Player Models (Spartan II, Spartan III, ODST, Marine
)
Command Stations (call in vehicles drops, weapon/ammo drops and air strikes all use Cr)
Fortification system (Switch into a monitor in between waves place destructible objects like pallets or destructible walls/barricades that use up Cr)
Expanded Arsenal(This has been discussed before ((like everything at this point)) but there is no need for campaign or firefight to be have limited Arsenals because of "balance" thast fine in multiplayer but for firefight and campaign you can throw in every weapon from the Halo Universe and then some)
I realise its a pipe dream but it would ensure that Halo 4 was my go to game of the forever