I'm working on a much larger version of this map;


And I'm running into a lot of problems all, I suspect, a result of my ignorance. But specifically I'm trying to create forests of different scale. Big forest at one scale that looks good at one view, many smaller forests at another scale that look good in a different view.

I figured out how to get the size of the trees scaled down in the Forest Terrain Fill, but the density is the same as the larger scale, which means what I get is an extremely sparse forest. Not only does nothing seem to change the density of the fill, the term "density" does appear anywhere in the UI or help files, as far as I can tell. At least not in relation to this issue. Which makes me think I'm asking the wrong question.

Any help would be greatly appreciated!