I glanced at all the pictures and thought the mod looked pretty cool, so downloaded it, and went into a survival to see about placing things to see how it all worked. At first I thought the basic grasses and mosses to be kind of cool in now they spread. Next I planted a Spinner and watched in amusement as the stalk rose out of the ground and curled up and thought to myself that this is pretty neat, but then the head fell off and went spinning off and started a new plant and I was seriously impressed by the creativeness. I really like how things spread and grow, but I think they might do it a little too fast in both the individual plant's growth, and the rate at which they create new plants. The current rate is pretty good for demonstrating how cool the plants are, but I feel that for actual gameplay slowing them down a little might be nice.
One addition that I think would be pretty nice is some sort of herbicide/weed-killer/Agent Orange style tool and or bomb. I noticed that the map I was tinkering with was getting extraordinarily dense with foliage and found that Major's Gasu weapons from the Empire of the Rising Sun faction did an absolutely amazing job of clearing out the foliage.