From BlenderWiki

FBX Importer TODO

• handle GlobalSettings - coordinate up axis, time units, def camera, ambient color etc
• check uv translation/uv scaling (two redundant ways how fbx specifies them, which one is right?)
• smoothing groups to sharp edges conversion (or is there any better way to do this in Blender?)
• also support reading Properties60 from 2009 and earlier
• bundled textures/resources
• texture wrap mode
• verify multiple (named) UV work
• fix normal vectors
• Read & test different euler rotation modes
• Support rotation & scaling pivots and offsets
• strict mode (only 2013, strict version checks)
• treat warnings as errors mode?
• mesh splitting
• proper names (drop Mesh:: suffixes?)
• load layers
• read patches
• verify line numbers on error messages are correct.
• add extra interface to assimp to attach meta data to aiXXX objects.
• make sure alphablending settings are read
• composite anim curve node
• support quaternion animation
• are names unique? should prepend IDs?
• support line meshes (test: garibaldi file)
• support transform inheritance type other than RSrs
• support cluster types other than NORMALIZED