3 Things:
AI in general. How many times has not only the AT guys, but just regular infantry, or snipers had clear line of sight to enemy they can engage and kill but just sat there and been killed by the enemy?
Or how many times has an AI crewed M1A1 or M2A2 rolled up, had a target in sight and in range, and even after being told to engage it just sat there until they were blown up themselves?
Or how many times have you had an AI pilot, fixed wing or rotary just flow over not engaging any targets, whether they were told to or not, when they had the chance?
On the topic of AI in the air, how about putting in a command that tells aircraft to land? Whether it's a return to airfield function, especially on fixed wing, or for transport birds to just land, but not get out, just so you can have them drop off infantry units.
And lastly when are we going to have vehicles that travel at realistic speeds and power? As a real life former Bradley crew member, I can tell you that a Brad will go up to about 65 MPH, not KMPH, on a hard ball road. And I can't even count how many times I've been going up a hill, that a Brad could easily take at well over 30-40 MPH with no trouble accelerating, and been stuck at a max of 10-18 KMPH. There is no realism in that and makes many vehicles completely useless in a lot of game modes, especially Domination or Warfare. Because let's face it, by the time you get to an AO in Domination in a Tank, that AO and the one after it are both completed already. And as far as tanks, if I recall correctly, an M1 will travel up to 55 MPH with no problem, but no faster. And even that is only because with the turbine engine they run on, if they go any faster it will rip the drive train apart.
I've also never seen a heavy tracked vehicle like a Brad or a tank, slide sideways like a hockey stop when trying to turn at 20-30 mph, let alone at 30-40 kmph. If you even think about turning the slightest bit at even those low speeds on level ground the thing tries to power slide into whatever you're turning to miss.
I just think it's about time we seem some true realism in the vehicles.
And don't forget, there is no way on God's green Earth that 1-2 RPG-7's are EVER going to take out an M1A1/2. It just isn't going to happen.
And I know the armor stuff is fixed, mostly, with mods like ACE which I love, but it shouldn't be necessary to have it, especially when the game is supposed to be a milSIM. SIM being the key word.
I know the land command would be new all together, but I don't ever remember having trouble getting AI to engage or problems like these with vehicles in OFP. Some of the vehicle stuff maybe, but not all of it.