(Posted these last night, spontaneously decided to modify them a bit, deleted the post... reposting now.)
Here's my attempt at a texture mod. These admittedly make for a hectic ride, but I enjoy them immensely. Haul headlong through tangled canopies, mad peripheral bursts of leaves. Potentially painful, but fun! Your mileage may vary.
Still trying to come up with an appropriate hit graphic, and contemplating doing something with the cliff texture.