(Apologies in advance if any of this has already been suggested, I searched to no avail)
If you havn't already gone back to the rest of the forums, I have a few ideas to help improve the armor play. I know that the devs are aware of the problem of tanks and APCs backing up over unaware grunts so I suggest that the drivers have a swivle camera (grainy black-and-white effect) on top of the turret for more situational awareness as well as a zoom function. I know that you are thinking about adding the TUSK upgrade which brings me to my next suggestion. I figured that the camera for the Abrams could be the turret with the M2 .50 giving the driver something to do rather than just use his limited view angle to drive around. The remote turret can also be equipped with a Mk.19 AGL, but that might be a little unbalanced. Making the TUSK upgrade ingame would really be nothing more than a cosmetic change except for modifying the turret and adding an M240 position for the loader next to the remote weapons station.
Here is a picture showing the TUSK upgrade-
I've been pushing for some different kinds of tank ammo in other threads but I figured I would be a little more specific here. The Abrams has the ability for firing M1028 canister ammo which fires 10mm tungsten balls with an effective range of 500 meters. As for the T-90 and the Type 98, they can fire the AT-11 sniper ATGM. PoE did a similar job with the Ukraine T-55AM2B and worked beautifully (however, the AT-11 is laser guided, not camera guided), and I can trust PR to do just as well a job.
Another idea that I saw that I figured was worth repeating was the idea of a turret stabilizing system for the tank gunner. Since the C key isn't used I suppose it could be coded that way (if it is even possible, which I HIGHLY doubt).
LeMazing.
