I have enjoyed many years of OFP and Arma by now, both as a player and mission designer.
What I wonder is why BIS (afaik) never has concidered to make a game similar to OFP/ArmA in terms of engine/concept, but in a completly different time setting.
I would run to the store to buy a medieval or renaissance "ArmA" where you could experience huge battles and sieges from a 1:st person perspective. Games like Medieval Total War are never really immersive enough, just tactical and strategic.
Medieval times is a classic and popular subject and probably less demanding on your PC, due to the low firing rates of the weapons. Designing a function for hand to hand combat and horses is basically the only thing that's needed to make it work.
Maybe I'm the only one wishing for this, but I just had to bring it up since I've been wondering for quite a while.