Mine would be a proper Ghost Recon style game. You have, lets say, a platoon of individual soldiers with distinct personalities and voices as a character roster, with personality conflicts and discipline problems. A smaller squad dynamic in mission where you can take control of each of the soldiers, and a dynamic orders system to have some control of the AI states. I'd introduce a cover system that works, make suppression fire work and make wounds impare the characters. No health packs, no regenerating health, and after a mission wounded characters have to heal before they can be used again. Death is permanent. I like the idea of it being a Twilight 2000 style game where you are part of an UN multilateral force enforcing martial law in a nuclear war devastated country, Twilight 2000 had Russia, but China, the U.S, or even Africa could work. It doesn't have to be a post nuke collapse either, social and economic collapse would work as well.
The plot is to escape to the coast/extraction point and you would have a couple of options. You would have a battle map where you can decide which sector to move through next, each offering a different challenge, you can also send small scouting parties in to gather intelligence and map a route for your convoy. You have no support, and have to scavenge ammunition, weapons, medical supplies, vehicle parts, and vehicles to get your platoon through hostile country. All plot comes from character interactions, you don't have to engage the enemy you can just try and avoid them.
To set it up in first mission your platoon is doing some UN style law enforcement and comes under fire in their APCs, the rules of engagement forbid you from engaging enemy forces and you are ordered to withdraw. That would end the first in-game cutscene. You then have a choice to either head for the UN compound or engage your attackers. Basically this will set your reputation for the rest of the game. Make your way to the compound and find it mostly destroyed and your air support wiped out. Then you move to the battle map and start plotting your escape to one of the safety zones.
There is no Multiplay.
The plot is to escape to the coast/extraction point and you would have a couple of options. You would have a battle map where you can decide which sector to move through next, each offering a different challenge, you can also send small scouting parties in to gather intelligence and map a route for your convoy. You have no support, and have to scavenge ammunition, weapons, medical supplies, vehicle parts, and vehicles to get your platoon through hostile country. All plot comes from character interactions, you don't have to engage the enemy you can just try and avoid them.
To set it up in first mission your platoon is doing some UN style law enforcement and comes under fire in their APCs, the rules of engagement forbid you from engaging enemy forces and you are ordered to withdraw. That would end the first in-game cutscene. You then have a choice to either head for the UN compound or engage your attackers. Basically this will set your reputation for the rest of the game. Make your way to the compound and find it mostly destroyed and your air support wiped out. Then you move to the battle map and start plotting your escape to one of the safety zones.
There is no Multiplay.