Arty and Mortar Strike accidental Team Kill possible solution:Turn up the "Incoming" whistling sound and make the shadows a bit more pronounced. Maybe start the sounds and shadows a little earlier. It would also increase the nice ambient background sounds of the epic warfare. I don't know if it's possible to have it different for allies and enemies as far as what they'll see. (Such as more noticeable for Allied troops, but as noticeable at current levels for Enemy troops? But it's not really important.) Either way, it seems just the sound and shadows might be used to help notify troops that may be danger-close.
My Note on v.99.2 update regarding Green's Tank:Green's Tank (Maybe all tanks? Don't know, no faction rotation on Invasion Servers.

) I love the newer update to match the other vehicles. Very nice. But the Green's Tank Driving controls feel a little over sensitive. Mostly noticeable on trying to do fine maneuvers. There were a number of times in one map in close quarters that I almost crushed bunch of players simply by very lightly tapping movement keys. Handles really nice at high speed, but small controls feel overly wild and bit unruly. Or was that the intent? Having it a little quicker on the move and nimble over-all is good. But it feels "squirrely" when you're trying to do fine movements.
Controlled Driving: Maybe when Driving the Tank a Movement Mod Control? Like Shift key maybe if not currently used for something by default? As the equivalent of crouch, walk, or sneak when on foot in games. Hold it to do smaller controlled shifts or movements in the Tank.
When in the Turret: If the RMB isn't used directly for anything, use it to rotate Turret to target location Without firing. (Or am I an idiot and there is something for this?) There are some times when you want to set your turret a direction without firing it as you rotate 180^ or more. Just curious about this one. Or if there's some way to rate the turret without firing.
I know the games almost done, sorry for making "suggestions" at this point. But you... love the game.