TpwUK, a lot of things would be helpful, lol. Importing dwg files from AutoCAD and assigning them a 3rd dimension automatically(to prevent the typical this is not 3d error... everything I've tested except Houdini gives me this common error -- atleast, importing the other fbx compatible format - nothing seems to import the now native dwg format... which would be really helpful. -AutoCAD LT only exports editable files as dwg and fbx... go figure), dimensioning tools, geometric tolerancing tools/display, leaders, tables for a dimension organized list, that kind of stuff(Of course completely nodal modeler would be awesome also, as models get more complex). And all of this cad type stuff would be even more helpful knowing someone who was doing it now that SketchUp is being sold.

Essentially... a 3D CAD program that was easy to model(moi has got this in spades), yet fully supported the autodesk dwg format(or fbx), so it was an effective go between of AutoCAD light and a nodal workflow without metric and imperial measurements like Houdini.

Mr. Michael is right though... the popups can definitely detract from modeling, yet the live input commands that AutoCAD has make modeling much faster. It's kind of a catch 22.