Competing with Vue is a bit of an unrealistically tall order, but on the other hand support for decent sized scenes would be really nice. I'd love a built in skydome and the option to switch the small ground square for an infinite plane. Of course this requires LOD support and more non-trivial improvements to the render engine.

I do believe this makes business sense. Not because I egocentrically assume that my wishes are the same as everybody elses in the community, but because it boosts the Poser eco system by giving vendors and buyers more content types to generate.