more than likely along the line we will steal shaders and materials from other models that do not require baked normals
hence only normal textures
plus spec textures if desired
but yea, since research is limited due to no access for modding, it will take even longer to jot this down.
another speculation: due to how dlc works we may be able to import rigged dae models and rename bones or import animations off the fly
just like that kid goku hack was made in brawl back in the days by Mastaklo...
of course it will take some modifications, but importing rigged models may be possible.