I have talked about FACT format with the Igors.
Here is my understanding of the situation. (someone please correct me if I am wrong here).
FACT stores vertices differently than OBJ and other formats, so they are not directly compatible (translation is necessary).
Basically Animator and Camera are dependant on the current implementation of FACT.
Changing to a different format (like OBJ) would require complete rewrites to Animator and Camera in order to handle the change. This would require a major effort, and pull resources away from other areas of development.
Also- FACT is a “container” format, not a geometry format.
It is easily extended, and already can contain information that OBJ cannot (lights, links to textures, shaders, etc.).
So defaulting to OBJ would take significant development effort, and actually be more limiting than keeping FACT.
At the same time better import and export of OBJ is necessary.
I think EITG should also look into better “bridging” between apps.
Perhaps import/export plugins for other software packages to read/write FACT or even EIAS .prj files.
Distrubute these plugins free for other software packages to help users get info into and out of EIAS. (EITG becoming a Maya developer is a good step in this direction).
Data transfer is a major is a major issue that needs to be addressed as EITG moves forward.
Dave 





This “battle of the wireframes” is a delight to watch :))