It will be cool if one day somebody comes out with a figure that bends perfectly in every pose.  But if Pixar needs, what was it, seventeen rigged versions(?) of a toon for proper bending in various situations then I'm not gonna hold my breath for a miracle Poser character that bends perfectly in all situations.  I'm very happy with the figures I have.  None of them pose well with their arms straight up over their heads.  Shrug.  So what?  I won't make any basketball animations ;)  If we let various shortcomings of content bog us down we'll never get anything done.  The other day I had a problem making a shoe fit Angela2.  No problem.  I put a potted plant in front of it so it couldn't be seen.