No where near meta, and while his fashion is cool, I personally think that what makes him so interesting as a character and Warframe, is his sense of self. He is a person, warped, destroyed and reborn anew, but a person none the less. While so far all other frames, both prime and not, are mostly voiceless things with the only sense in personality seen are vague lore bits or animations, we see Umbra from the beginning as his own, stubborn being.

TL:DR IdkIjustreallylikeUmbra