With regards to the "Boob plate" query, please refer to my earlier comments. Especially those regarding my female friends with a larger chest size, who wear modern sports breastplates for martial arts training that feature boob plates to accommodate their body shape.They don't see the boob plate as a liability. Nor does it compromise their skill in combat. Being a flat...
The problem with "boob plate" is that it deflects attacks into the center of the chest. There have been female fighters throughout history, but none of them wore shapely armour that cupped their breasts. They were usually bound.
But a better question is why all your characters have such ridiculous breasts. I mean, I love your art, I really do. You're one of my favourite artists, and Kor Hookmaster is one of my favourite looking Magic cards. But man, even the half-orc has some tig-ol' bitties that she shows off. I've joked that Imrijka is proud of her chest and shows it off to detract from her face. Even Merisiel has cleavage, and she's an A cup. I recently put this together and a lot of the comments on Reddit were saying that I should cut out a few of the iconics because they're too scantily clad or have ridiculous breasts that might turn other girls away because they're needless eye candy.
Alahazra, Imrijka, and Freiya had the most complaints. They're nice designs, with nice silhouettes, but, again, they have such stereotypical fantasy breasts. I would like to add that I'm glad that it's changed, and most of the Advanced Class Guide characters are allowed to have collars on their shirts and armour that covers their chest.