Looking at all of the various options you are toying with, I think I am sold on the rectangle dirt. Basically the black rectangle you did without the harsh edges, but in the dirt color/texture. I think those in the back (and on my hover) with the fence in the front on the small rail will look great! The grass looks pretty good, but the "loose strands" don't sound good to me inside a pinball machine and I still can't get past the fact that corn doesn't grow out of grass... lol. I know the movie had some green under the corn, but I just can't wrap my head around that one.