Nice deck, like Josh said Nabrissa would be your next option after her price drops.
You could just leave the deck as it is, it's a nice deck and doesn't need any real changing. I can't help but think that Sayura is pretty similar to Kamekun, 1 power less with 2 damage more and a ability that works any time.
Kamekun's a nice card, but you could try and get Futoshi Ld in there. Futoshi Ld - Kamekun then Zhu Tang - Kusuri.
Or Yoshida - Fei/Heitachi then Zhu Tang/Kamekun - Futoshi Ld.