I came up with this a while ago but don't think I've ever posted it.
Can we make it so that the driver has a key, which when pressed, generates a vehicle voice message "target at XX O' clock", clock position depending on where the driver looks while pressing that key?
Right now, it is a major pain in the butt to tell your gunner when you happen to see a threat before him. text chat is slow, and few public players ever are on voice (and I dislike voice chat for other reasons anyway).
With my suggestion, you just need to poll the game on where the driver is looking and then release a pre-recorded voice message with the correct clock position. It won't be a magical enemy-finding radar either, because it depends on the driver himself to look into the right direction.
Alternativley:
The numpad keys right now default to "forward; right; left; reverse" voice commands when you're in a tank. That is usefull for the commander, but for the driver it would be better to have the "target left/ahead/right etc." commands on the same keys.
Super Bonus:
How about a few quick keys (like the numericals above the letters) to shout out an estimated DISTANCE to an enemy tank? German practice as per the manual was for every crew member to give a distance estimation on a target, which the commander would then average and command to the gunner. It can really help with target estimation, and besides that it would offer use to say "enemy tank 12 O'clock, 700 meters" with two key presses.
Inter-Vehicular communication really is important, and right now the default com menu is too large and cumbersome to navigate.