Maybe Yamato's hybrid form lack complex antlers because she's a female? The snout fits, the tail too, but the thing is there isn't any Eastern creature I can think of right now that would fit. Qilin, while the most obvious option, isn't really well represented by that design, it just doesn't look like one at all.
I'll throw a wild guess: Hakutaku (also called Kutabe and Baí Zé, among others), a white, deer plus wolf-like creature that in some modern works is depicted in a way that could fit Yamato.
Some examples:
Any opinion?
Mythical Vixen would prove extensively cool for me.
I think you've reached a whole new level in using unnecessarily elaborate language to say nothing complex enough to justify it.