Give the users some serious and easy to use tools and we will do the job. One of IPACS biggest failures, in my opinion, is to fully appreciate the power of the user base.
My thoughts exactly. Couldn't have put it better.
Airport development tool
Open up the texture files, great they are encrypted but naffing useless to a developer
And don't get me started on the TMD file
+1000 for the blender plugin
Add to the list : ground flatten polygons like in FSX (easily usable with tools like ADE or Sbuilder X) ; exclude polygons that remove all default objects so that you can place custom ones