If you just go for the orthographic top-down approach, you might as well use Heightfield Export LWO instead. It's a lot more controllable, has no holes, and will give you the same or better output. The advantage of the LWO Microexporter is it can capture overhangs and other non-planar features that a heightfield export won't, but if you're already rendering from above that advantage is nullified.
- Oshyan