Fantasizing now, hopefully an aggressive programmer will pick up on this and run with it...I offer it up gratis.

 There should be a stand-alone or plugin that takes your poser character and responds to simple commands.

Grow hair.  The model grows hair until you tell it to stop.  It is straight and parted down the middle.  When it collides, it drapes smoothly in real-time physic sim.

Move part left, right.  The part of the hair moves until you tell it to stop or there's a slider.

Curl with X clump:  The hair curls with X being defined as the thickness of the strand the curl gathers.  Advanced settings define the weight of the curl and how it reacts to the hair above it.  While the hair is curling it cross-references for collision in real time.  Sliders for size of curls and variation.

Pull Back at ears, reverse gravity, wind...all sims

It should work with polygons, not splines and should texture itself universally with a pallete of colored textures.

 

Export to Poser.  If you need morphs, simply restyle and export as morph target.