Is all good here it was just a thought since there is a shift towards .fbx and .dae perhaps will be easier or less work for you if were to just support these. I think with .fbx .dae and .skp you are covered for every software out there, so you can forget .lwo .obj .3ds. Anyway I am not a specialist on data formats so I may be wrong, it just seems to me that Autodesk is pushing .fbx and collada is...