All these look good. I think the Chun could use a more dynamic pose though. The current pose looks like she is either starting her Focus Attack or about to start the Kikosho Ultra which seems a bit plain.
I would love to see her doing a simple jump in. It may be harder to execute in sculpt, but if possible it would make the piece look absolutely gorgeous and balanced.
Cammy covers the low, Juri the medium and chun the top/air. Maybe one of the fence's beams in the background can be used to keep her in the air.
Just my two cents. Either way, it will still be something I look forward to.