Never really noticed the lack of them before, but when standing there in your own foot prints, next to your SRV tracks and bullet holes in the dirt, and you dismiss your ship and the area where it was is pristine, it looks a little strange. The feet should probably sink in a bit and have a little dirt bloom up around them. This graphic would also help conceal when a landing foot is floating a bit off the ground. Certainly not a big deal, but a minor QOL improvement.