Specify detail density and detail distance PER grass texture?

I would love to have two layers of grass with different density and distance settings. This is what I'm trying to accomplish:

1. FAR GRASS: The big grass, tall and distant. Because of it's height and size it can be seen far away.

2. NEAR GRASS: The small grass, only rendered very near the camera. There is no point in rendering it far away because... firstly the tall grass obscures it, and secondly its too small to be seen at distances greater than ~30 meters.

But since all grass types have to share the same common settings for density and distance, there is a huge number of wasted drawcalls.

I imagine two possible solutions might be...

1. Grass density & distance can be edited per type in the small terrain detail window if the terrain allows it.

2. A separate second object (either grass splatmap or mesh with vertex color data) with its own detailDensity and detailDistance properties.

I would love to know if anyone has tried this, or can point me in the right direction :-)