The theory that Yugiri is Bangaa holds up well due to the following:
She has the lizard like tail and floppy ears.
Roe are basically Galka, but don't have the tails and are proportioned a bit differently, as well as miq'ote being less catlike in the face than their mithra counterparts. This leads me to believe that the Bangaa being brought in could very well have the same creative changes done to make them more visually appealing at least in their female form.
Also, there have been past discussion about how armor works in this game and the body proportions the Bangaa are being given may well be to help facilitate making that process easier since if they had their own proportions the armor/weapons team would have to create a set of armor SPECIFICALLY for them which is extra work.
That's just my 2 cents.