I enjoy every picture of the results of this tool!
I still don't wanna use the last beta, but I am amazed by your tool!
Great job!

A question came to my mind: what about the framerates?
Did anyone compare it to similar maps (although it is anyhow not comparable), maybe to a multitextured terrain?

Are the shown levels made of a single model?
What about different models with different lightmaps in the same level?