1. Currently we are not making ground sim. So we will have minimal amount of trees types in the release. This minimal amount will be based on Speed Tree samples, reworked for our needs. And trust me it is isn't a small work. We simply decided to use speed tree just because of possible future developments in other directions with the controlable ground units. Thats all. In terms of speed and required power our own trees technology was oriented only for flight sims.
2. We will use some stones and some bushes. But with the sight how to do not owerload the grphics in terms of rendering speed. As more types - more overloading due to render on a great surface (same for trees types as well)
3. Before these screen shots posted, nobody even noticed about any of the last fligth sims speaking about types of trees there
Even if it is there totally incorrect.