We're well past episode 3, I know, but one outfit I'd like to see modeled after a boss would be one to look like Agna phandaj.
As you can see from the overall design of the boss, it wouldn't be too hard to imagine it being an outfit for female players. You have the helmet, the half-covered sleeves with shoulder-blade decorations, the corset-like chest/torso piece, and the skirt. The Stockings would be black and buttoned to look like the orb underneath Agna as well. I'm genuinely surprised no one has really pushed for an outfit design of Anga yet.
I believe we have the orbs or floating bits, but I could be wrong.