I think, for myself, a way to ask what I would want in V6 is to ask - what do I have to go outside Rhino for?
First, layouts are better in V5 but still quite a bit screwy when compared to AutoCAD. So I do most of my technical output in AutoCAD. I’d like to see Rhino get in control of that whole area - decouple text / leader / dimension annotation, etc. Simplify it, make it more logical, make it more stable.
Second, Rhino has accepted the doubtful premise that rendering output should prioritize the Keyshot / V-Ray / Maxwell photo real model. So we have Neon and Flamingo and Rhino Renderer and Brazil, and so on (all of which do more or less the same thing). But the fact is, 90% of my renderings take place during the development phase of projects. My clients don’t expect and don’t want to pay for high quality photo real renderings during the conceptual stage. But they do expect textures, surfaces, etc. So that means exporting to SketchUp. SU can export clean, textured images with no struggling with lights, GI calculations, backgrounds, etc. Rhino can’t.
My two cents at this time.