Hello! I am man, professional artist and freelance web designer. Nice to see that someone at least speak up against endless armor bikini (taken from pornography) and sexist belief that "boobs sell everything".
Let me say that men are people too and want to see good work of artis as much as the woman do.
Speaking of about good desing of a character there are two major rules artist has to follow if he (or she) wants to make the character unique and memorably.
1- Good design has to show character - who they are, what they are doing for living and what their social status are.
2- Good design has to be realistic - you don't need to make something just like in Real life but you have to make the player believe in your world and be emotionally engaged into your heroes.
Speaking about contstantly breaking the rules of those two. I will use example of game the Witcher series because
those games label themselves as "mature and realistic".
Those two has good made legs. Why for the God's sake they came to the battle without protection of vital organs?
Let's also not forget that Saskia's armor ignore that sharp parts near her bust will just cut it off? Stop looking at the pornography and use your brain.
Of course we have boob window. This artist doesn't know what "Decollete" means? If he does why he put it on armor instead of dress where it belongs?
Cirilla is the fighter. Any reason she have to wear high heels while she is at war? And of course no protection for her breast.
Why sniper have high heels and latex outfit?
Here are so popular boobplate - we can see them everywhere. Armor has to be smooth so weapon could slide down but instead those two metallic humps would thos enemy's sword just in the heart of this "warrior". You can break your chest while move with boobplate - should I say that or it is clear for everyone except for an artist?
https://hydra-media.cursecdn.com/overwatch.gamepedia.com/thumb/6/6d/Zarya-portrait.png/350px-Zarya-portrait.pngSylvana desing suggest infortunate implications with necrophilia of a the creator. For the god sake she is undead and she wear a bikini! Does this artist ever think how a dead body looks like?
This one get Oscar for costumes
To sum up- armor bikini has nothing to do with logic as much as pornography has nothing to do with attractivenes of a real women.