Wishlist of specific improvements for the Ground Player Experience:
Dynamic slots / dedicated spawn for ground vehicles.
Repair trucks (repairs damaged unit over x-minutes).
Vehicle ground traction / friction so vehicles stop handling like they're skating on ice
Player controlled vehicle headlights.
Player controlled vehicle smoke launchers.
Updated industrial 3D assets: eg. factories, etc look terrible. Realistic looking FARPs. Source these assets from 3rd party if you have to, like you are doing with Current Hill, etc.
smarter / pre-plotted AI pathing. Roads should be pre-plotted paths (server doesn't need to do any work) that AI vehicles will opportunistically use to move around more efficiently.
Larger concept:
As for dynamic slots / vehicle spawns, and this is a bigger ask, the ability to spawn a small group / platoon of 4-6 AI vehicles that will follow the player occupied vehicle in commanded formations (line, column, etc). Think sims/games like Gunner HEAT PC or M1 Tank Platoon. If player vehicle is destroyed, they can easily jump to another vehicle in the platoon and continue. This will dramatically change the ground game. Even a few players followed by their platoons will make the ground battlefield look vastly more dynamic and real.
Thanks.