I have just been looking at the texturing of the tree. I know that we had written off using the wood texturing that is built into Maya quite early on in favour of a UV Mapped solution; but from studying it at closer glance, I have found that it actually has quite a nice, rough texture and could fit well in our piece.
Take a look at these two images, compare them and let me know which you think works better.
UV Textured Tree
"Wood" Textured Tree