I would imagine making further add-ins to convert items to duf format wouldn't be out the question... although depending who wrote those, the installation of DS4.5 may be required?

But a 3rd-party add-in could perhaps automate DS4.5?

I downloaded the DS4.5 C++ SDK yesterday to have a wee looksie... if that is worth it's salt, then 3rd party automation may be feasible, I guess?

But it may be possible to make dufs without recourse to DS though too???

Who knows, maybe Dimension3d, or PhilC, or someone, is on the case already...