hmm, i have crysis, i dont see how much different it is, unless i'm overlooking something ? game design is about how you make use of the effects you have, somehow i really think the tree shader of GS is quite good
If itīs really that important for you, learn how to write shaders and implement it on your own: http://developer.nvidia.com/node/173 Or finally stop your graphics odyseey and start making games...