On the image you see marked points with file. There it looks as if it has (swimming rings). This is so wanted or can still change.

http://www2.pic-upload.de/17.04.10/juuef1ymwq5.jpg

Then I am impressed his motion scope already even though not all parts of the body functions. Includes the Cr2 already JCM ´s to control the movement or goes that far without JCM ´s.
It is a good idea in the shoulder area include an additional actor. My erachtens improves their x y and z rotation behavior.
The only what you could do more in the footer area nor toes insert an actor that man can then even moving.
But nansonsten is already very impressive for a low poly version since it know hardly edges from rendering.