I'm with Svdl about the interface.  The current set of buttons and widgets are kind of silly and take up too much room.  I do use the widgets but Parameter Dials are way, way, more important.  Having IK accessable right on the interface, I think, would be an improvment.  Using the menu for this feature is kind of clunky and interrupts work flow.  The application IS Poser.  Support for model creation is great but the core application, at least for poor modelers like myself, is posing and animating finished figures.  Easy click IK would be great.

That and I wish Poser would wash my dishes ...

-Rªnce