> Is the display mesher the same as the export mesher BTW?

They're related. They are each part of a common core, then there are about 7 or 8 different places where the mesher chooses between 2 different algorithms depending on whether it is doing display meshing or export meshing.

The things for display meshing are tuned for speed. The ones for export meshing do a lot more calculation to try and get minimal and well proportioned meshes.

- Michael