I think everybody should have some kind of quick field binoculars with a range finder. Heat vision could be an upgrade.

Maybe there should be a vehicle stat that's separate and adds buffs for time driving
like
if you use quads a lot at a certain point you should get a power ban
or driving tanks makes you turn and change direction significantly faster.
I've shot 5 copters from the sky with tank rounds
maybe silly things like that give you greater accuracy doing the same thing going forward