A fine image Yossam! The terrain and the trees work well together, nicely done.
While the Speedtree policies may seem exclusive, it certainly hasn't kept the software from winning Academy and Emmy Awards, not to mention being a key pipeline tool for most major Game and Movie Studios. As I read the EULA from IDV (the makers of ST), the sharing of files within a working company is permitted provided that all users own a license, or in the case of a large production studio (such as Digital Domain) that the licenses meet the contract specifics with that Company. So if several of us were to create a some sort of business association and share "work products" that probably would pass the guidelines, provided that the actual Speedtree Tree Libraries were not being re-distributed en masse. The sharing of custom SPM's (Speedtree Procedural Mesh) with non-IDV assets should not be an issue. If there are enough ST license holders here who would consider such a thing I would think that the folks at IDV wouldn't really object. But once again, if there was interest, we could query IDV as to the feasibility. Planetside did acquire a ST license for the VR contest, so IDV is willing to make arrangements and seems to have some flexibility.