improved import / export options (units, axis directions etc)

IK Chains that allow Loops (hold that sword at last)

a mid level for the material room ( the lowest is the basic materials ala Poser 4. then there's the programming room. there needs to be a mid point, where shaders like the ones BB programs can be compiled into nodes without the drama. eg BB programs a metal. in the mid level, thats one SINGLE node you put in your colour/roughness/spec ... that simple. most users don't need the math behind the node, they just need the material.... )

API that allows direct linking to outside render engines, material makers, plus any addons the community can think of (look at the rich support that Sketchup has via this kind of support there's almost every tool you could ever need bolted on now...)