A game that has all of the fronts, all of the weapons/vehicles(and you could use all of them) , every battle, a rank system, destructible scenery, take any role(Soldier, Seaman, Pilot, and some of the not so usual roles such as: priest, medic, hell, maybe even the cook, and if you wanted to: a riviter on the homefront), and a world map with no limits. Day/night real time, weather, able to dig foxholes and trenches, vehicles would have real looking damage instead of just smoke, and if you shot a tire, it would deflate. few other things: able to surrender, able to escape a pow camp, able to liberate the camps(expects backlash for mentioning), able to defect.
How to select a soldier to play as(forgot to mention this would be a FPS)
1. select country
2. select army
3. select regiment
4. select company
5. select squad
6. Select Soldier (can only be PVT to start off)
By the way, if you made it up to the rank of colonial(or higher) then you wouldn't be fighting on the front
lines you would be taking and giving orders from the rear.
Food, sleep and exercise would also be included.
Multiplayer
support for 10000
and so everyone wouldn't be all over the place, you would be able to select a smaller map, such as Normandy and the ruhr.
Extra stuff: you would not be able to select the year, a new game will start in 1939 and when the county you are fighting for falls, you will either:
1. have the option of choosing a different country
2. go into the POW camps
3. go into the POW camps but escape and join the resistance
4. slip away from the fight early and join the resistance.
5. join the enemy
More when i think of it.
Dying/respawn
When you die you will lose your rank and will have to select again
Added stuff: trains, manual loading and unloading of equipment from vehicles, doors can be opened/closed(Houses, vehicles), when you enter vehicles, you have to open the doors, when in a vehicle your either driving or your not, no changing positions(exept bombers or half tracks if the/a gunner is killed, on half tracks you can choose to man the gun and on bombers, you can man two guns (only if you start as a waist gunner), if your the bomadier then the nose gun is your responibility as well)