i,ve just read through the feture recwests by the apricot project.
http://apricot.blender.org/?page_id=14
Quote: "Exporters
* Better mesh exporting API. The current one doesn’t keep vertex sharing and thus produces over bloated mesh data.
* improve verse
* make fbx exporter work on macbook pros
* exporter defaults get saved with ctrl+u
* export to direct x
* working collada exporter that does more than static meshes
* exporter for w3d
* like helping the author of the b3d plugin with lightmaps export, or provide lightmaps export in other formats, but hopefully the most used. Luckily, there are always formats that tend to be most used (md5, b3d, x, md3, md2, OBJ, ASE , FBX, collada ) like I have seen many engines and tools already importing lightmapped levels in *.b3d format.
* import and export script for MicroStation (.DGN).
* Better import of Collada and FBX formats in Blender (with armature animation)
* custom object properties support for the fbx exporter
* instancing support for the fbx exporter"
if this gets implemented it could be a huge advancement to blender im a game dev pipeline
