I like the way Medusa looks with a mask. The Inhuman work best for me when they convey a sense of mystery and otherness which I think the mask does for the Queen.
I think the 1602 version of Medusa always had a great look. It combines her more with her mythical counterpart, which works for this story.
While I don't remember her doing much of anything, I always liked Ult. Medusa's look too. This version of her is also more like her mythical counter-part.