I've done some tweaking.
- Made the texture color and tone more closely match that of my Pacific bushy palm mod textures.
- Altered the lighting parameters in the .mat files so that the behavior more closely matches that of the palm trees (at least for my bushy palm mod.) Further to this end, I also altered the surface normals, orienting not perpendicular the the face, but instead angling them upward. (I'll explain the reasoning when I make up the readme file.)
- Added some transparency cut-outs between tree trunks. This adds to a 3-D effect because of other more distant elements seen through them. (This would be particularly effective for the proposed object described below.)
- Combined the two objects into one. That is, what was formerly two single-faced objects is now a single object textured on both sides.
- Added two additional LODs, with partial transparency, for a better transition in appearance/disappearance.
- Increased the size to better match the existing palms, as well as further widening so that the texture not look quite so 'squished'. The new size is 16m tall and 40m wide.
What I might do:
Make a palm plantation block of 40m x 40m, so as to properly cover the terrain. My current plan is a 6 x 6 grid of these objects, with a 'roof' canopy texture placed at about the height of the trunk tops. This 'roof' would have transparency gaps, and the lowered height would permit the irregular profile of the grid parts to still contribute to the appearance of varying tree tops. If necessary, in order to provide a shadowed ground interior, a 'floor' texture might be added. This would likely be a partially transparent, dark texture, so that the underlying terrain texture would still show through.