Why not make a Halo game where they have a large amount of people(64+) play against each other? Sort of like Battlefield, but in the Halo universe. 343 and Dice and Frostbite can work together to make a great halo game, where you could use banshees or falcons or phaetons to dominate the sky, and have ground vehicles like warthogs and ghosts and revenants to use on ground, and spawn in with say a splaser or rocket launcher. You could also pick up equipment, armour abilities etc in different places. You could even add pelicans and phantoms for team transportation.
This would have to be massive, and involve vehicles, weapons, powerups and would even be a good place for Halo Reachs spartan abilities to make a comeback. Halo 5’s vehicle diversity could be part of it depending on what level you are. It can also allow for MASSIVE maps (10x+ bigger than Raid on Apex 7) and the size alone would allow for these sort of things to be acceptable. Sort of like a mix of Halo Wars and Halo FPS games. And to top it all off, like in BF1, instead of calling in a zeppelin, you call in a covenant corvette or UNSC frigate for team support!
You could also be different classes according to rank(marine, Odst, Spartan, etc) and could choose. Also have a customisation option for each class. Have a Red vs Blue team sort of thing for teams. Also, according to rank, you can have weapon loadouts(e.g. sniper rifle, Smg, 3 frag grenades, assassination knife) in a sort of power weapon, lesser normal power weapon(in Halo FPS usually loadout weapon), grenades assorted etc including amounts. Also keep the assassination thing for it. Also have spartan abilities as default and add armour abilities according to rank.
You could also have enemy A.I. drop in at random points for encounters. Sort of like in Warzone, but less bullet spongey. Make them different and harder to fight rather than just buff their health. You could also have loads of enemy AI in the map at start and both teams have to clear them out of point capture and they AI do not despawn-it makes for a fun encounter when you walk into a building and there’s a bunch of AI in it.
Now, I don’t know much about Battlefield, but I know enough to say that you could make some great maps of this. Halo has a HUGE universe, and it could ALL be used for this. It NEEDS TO HAPPEN. 343, if you’re listening, you could make so much $$$ off this joint, you’d all be driving Helicopters to work. Now I know it would take like 5 years, but it would be worth it. I can add extra ideas to this if need be. There is a giant halo universe out there. Use it to make the greatest halo game of all time. Talk to Dice/Frostbite/whoever can help with this, but if you can pull it off, you have a HUGE market for this.
With regards, a halo fan.