Ok, this may be true, but not a limitation of OZ. Most people are not 3D artists, and if their source material is not up to EQ standards, then it goes down hill from there.
I've got some decent .x models for my world editor you can use. I made these and are low poly. I coded the world editor a few years ago...
http://66.159.225.58/uwe/uwe.html
GeorgeS