I've been playing the big tank battle in the set pieces with the Russian tanks and it's damned good. It's a bit buggy as you go deeper into the armour bust out mission with vanishing tanks and what not and a clumsy control system that makes it hard for me to coordinate two tanks with 4 crew members that keep wanting to dismount.
But despite that it's awesome realism when it gets rolling.
And my dream is to see Arma get to the point where with 1500 tanks and smoke and artillery, we could be playing a game that rivalled Steel Beasts Pro PE.
But the mod will need an immense amount of work, with coding for a superior supply system to what we have now...one that will make driving suppy trucks a lot cooler...tanker trucks full of fuel in the rear echelons fueling exhausted tanks and then getting hit by Hellfire missiles from attack helicopters... and so on...