Given my horrible skills with FPSes, I'd make a game about an arms dealer funding both sides of a conflict while trying to make as much money and influence the politics of the region as much as possible.
In addition to being part economic sim, it would be a political sim as well. Only if you screw up royally would you have to resort to actually picking up a gun yourself. You would decide what types of weapons and armor you'd sell to a side and how much you'd charge (which will affect how much they can/will buy from you)
Then, as a complete break from the single player, the multiplayer would be your traditional battlefield 64 vs 64 online match. In this mode, you'd be playing one of the sides funded by the player in single player mode.
You could even have the two modes tie in. The decisions of a player (Give the government body armor and the rebels lots of rockets, for example) in the single player would spawn an open multiplayer match where you could play as the government or a rebel. Government players would spawn with high armor and have lots of body armor spawns on their side, while the rebels would spawn with and find lots of ammo for, rockets, but relatively little in the way of armor.
Then based on how the battle goes in the multiplayer, that affects balance of power in the single player. Not only would it be important which side won, but how decidedly they won.
The single player arms dealer would be incentivized to make these battles as even as possible. A landslide victory by one side or another would mean they have no further need for your weapons. Thus multiplayer maps would be a bit different, but generally balanced.
In addition to being part economic sim, it would be a political sim as well. Only if you screw up royally would you have to resort to actually picking up a gun yourself. You would decide what types of weapons and armor you'd sell to a side and how much you'd charge (which will affect how much they can/will buy from you)
Then, as a complete break from the single player, the multiplayer would be your traditional battlefield 64 vs 64 online match. In this mode, you'd be playing one of the sides funded by the player in single player mode.
You could even have the two modes tie in. The decisions of a player (Give the government body armor and the rebels lots of rockets, for example) in the single player would spawn an open multiplayer match where you could play as the government or a rebel. Government players would spawn with high armor and have lots of body armor spawns on their side, while the rebels would spawn with and find lots of ammo for, rockets, but relatively little in the way of armor.
Then based on how the battle goes in the multiplayer, that affects balance of power in the single player. Not only would it be important which side won, but how decidedly they won.
The single player arms dealer would be incentivized to make these battles as even as possible. A landslide victory by one side or another would mean they have no further need for your weapons. Thus multiplayer maps would be a bit different, but generally balanced.