it has been a years of concern, that walk designer is used for crearting walk style animation on the fly, but there are many many other movements need this function, I assume python script can take this. BTW I have been thought of using BVH data to analyse some basic human movement and categoriez them for easy use. waving, sitting, pondering, triping, shaking head... just too many to come up with. both should help us shorten our learning process for realistic human movement.