At the request of a friend on TFW2005, I through together an ankle tilt part for the Kreon Combiners. It plugs in to the torso and has a port for the waist. It makes the feet larger though, but otherwise it allows the feet to tilt from side to side while the neck connection on the torso provides the pivot and the hips provide a front and back tilt.
I'm not planning on testing these but if anyone does, I'd love the feed back ^__^
A larger version of the design sheet can be found here:
Kreon Combiner Ankle Tilt Design