yeah, not so much, in my experience.  just for personal use, my target app is Poser, but the Blender forums and sites are still the most helpful for me.  i mean, this site is good with info for getting from certain apps to Poser.  for instance, my best information on import and export settings started from inquiries in the Blender forums here.  when i was curious about Zbrush, the Zbrush forums here seemed to have the best import/export info for Poser.  are there CAD forums here?  anyway, your problem seems more basic than Poser specific.  you just need to learn how to get from your CAD program's native format to .obj most efficiently, right?  i'd bet that's a fairly common problem in the arch vis community, while being very uncommon in the Poser community where only a handful model, and most use a polygon modeler.