Currently you aren't able to rotate land vehicles (like the mudskipper or roller tank) while stationary which can be quite unintuitive and janky. Requiring the vehicle to be moving is pointless, at least for the hover vehicles, and disrupts the play experience. So I would like to request that this stationary rotation functionality be added.
Also, as an aside it might be a good idea to modify the land vehicle system as a whole to feel more like air vehicles. So for example, the mudskipper would control similar to a hovering air vehicle (with mouse control of the direction) except without the vertical movement. Land vehicles seem to suck in comparison to the great air vehicles.