Jeremy219 posted a problem with the current toolkit texture exporting:
Unfortunately there a few issues concerning the actual geometry and normals and tangents.
Not to mention the whole CATCH ALL material export properties.
I fixed these issues (AND MANY OTHERS) in the new Babylon Toolkit (which i hope to have a release for by the time Babylon 4.0 goes stable). Is re-written from the ground up using my own GLTF Unity Metadata Exporter as the scene file generator. You get almost picture perfect exports to the original Unity Scene.
Here is that same scene using the new Babylon Toolkit 4.0 Beta 3
Unity Edit Screen Shot:
Babylon Toolkit Export (Including Mixed Realtime and Baked Lighting):
Looks pretty freaking sweet to me