Hi Doc,
I have a live and let live attitude, so whatever floats your boat works. I don't get the mask on one level, but i totally get it on another; its no different to make-up really, or the use of a wig which is a huge indicator of the projected identity.
I think the only thing i personally see as incongruous, without judgement, is a skinny presentation with giant boobs and no hips; it feels too false to me, but I accept it's what the person is happy as.
I rarely use stuffing up the bra, rarely use a bra actually, and don't use hip pads as yet. Partly its financial, but mostly that's an excuse because really I want to transform my body and present as authentically me as I can, so it's hormones for breasts hopefully, and maybe some weight redistribution, but the rest is using clothing to create the shape illusion, so i design flare into the bottom of tops, choose short-ish skirts to flare out. In the end my physique won't be too different to female strength athletes who often have larger shoulders and small hips.
When you consider the therianthrope range of expression, CD is just part of a much larger spectrum, and how does one trans-species like transgender?!