I had once an idea about game, when there is command chain
one country chief (like HoI IV) who has battleplan system and tells armies what to do
armies commanders who give orders to corps
corps commanders who give orders to divisions
divisions commanders who give orders to regiments
regiments commanders who give orders to batallions
batallions commanders who have RTS (like Company of Heroes) way to command
companies commanders who are now normal soldiers and command by "screaming" orders (like when you press Z in Counter Strike and you would have have "follow me", "attack/defend this" etc.)
soldiers divided into platoons and squads, with commanders and companies' order system, but it would be much more like Battlefield or Arma
And every commander could request backup (like artillery or additional units) from someone above them in command chain
it would be bad propably, but idea isn't bad itself, right?
Have any of you played ARMA 2 or 3 or the popular Battlefield 2 mod 'Project Reality'? It doesn't go all the way up to the strategic level but when everything falls into place you get this amazing semi-roleplaying vibe with over 70 dudes perform their military duties according to rank, squad and specialisation. This means infantry platoons walking in V staggered columns while the squad leader is talking to the commander flying overhead in drones, requesting air support. Hell, there's guys who do logistics for entire matches, this means they drive drucks and don't even fight.
Notice I said 'when all falls into place', as has been said here, you basically need dozens of interested players able to work in team. A single griefer can easily shut an entire server down, and ruin your meticulously crafted hierarchy. When it all comes together though, these games can be a dream. I remember a great two-hour match where I played as the mortar commander of a seven-mortar brigade. The entire game had me leaning back in my chair with a stopwatch in my left hand, passing on coordinates and performing fire missions. My character would just stand idly in a foxhole staring at the horizon, while I blasted commands like 'Mortar teams Blue, ready for round, coordinates ALPHA CHARLIE VECTOR NINER 4, bearing ONE OH SEVEN OH, three rounds, airburst'. I felt like a total badass
But to bring this to a HOI scale would be logistical insanity. Imagine a 64-player match for every province you are fighting on in HOI2, that means a single Grand Commander would require at least two dozen matches a day and over 3000 FPS players at his command.
I mean, I'm down, as long as I get to be artillery commander