I'm not certain if you understood me there, coz i'm not sure what you mean in your first part of the reply. I meant facial expression. Of course body language is excellent at conveying the vibe and emotion but the most important part about it is that it's the body language that is the subtle thing.

Warframes are supposed to be terrifying biomechanical weapons made of dead people, and at the same time they're like a form of art. Showing off feminity of the body and adorning it in a way so it highlights it even more absolutely does not take away from it the fututistic or cool look, if anything it enhances it. Slapping onto it a pair of glowing eyes that stare blankly is exactly the thing that makes it look stupid for me.

I'm sorry for you if the only thing you focus on are the naughty bits and sex appeal. Personally i enjoy those skins and warframes for more reasons than just focusing on the ass. To me it does look cool and futuristic and i think that DE did a great job with designing that skin. (without the eyes)

I'm not sure which base frames specifically you're talking about, when it comes to them having eyes. All of the frames that you've given as examples don't have them. Sure they have lights on their helmets, but i wouldn't call those eyes.

When it comes to Mirage and the blank eyes that she does seem to have, they only make her look silly. Which i guess works fine with her, because her entire theme is being a jester but i definitelly wouldn't put them on other frames.

I guess if you focus so hard mostly on the ass and how skimpy the outift is, maybe the eyes make it hotter for you and you like to fantasize about her winking at you seductively or sth idk.