I am trying to merge the patches ziv_ew posted earlier in this thread, and see if I can kluge something together that will fill in at least some of the gaps. I am not a texture expert on MC and have limited time, so I don't know how long it will take or if I will even succeed. If I do so, I'll try to make it into an acceptable format and post it for public use. That being said, if someone else here has more experience and is already in the process of doing something similar, please continue as I don't have a lot of confidence that my own attempt will even work.