Since we're getting alll kinds of heavy trucks, the ability to have more than one perspective available at the same time would be great. Maybe in the Style of Euro Truck Simulator 2.
We sort of have them if you use dynamic reflection. Proper mirrors are very expensive to render generally in the GFX context. Guess something more 'focused' on actual mirrors can be done after the GFX Engine of BeamNG.Drive gets the optimization it needs.
Glad to hear that you guys know the graphics need an overhaul/optimization. That's my only complaint I currently have with the game.