I'm playing a Seeker of the Sun Miqo'te. They are characterized by S-E as being more lively, outgoing, and playful than their Moon Keeper counterparts, which to me seem far too serious. My Mithra in FFXI was also quite playful, and I enjoyed that part of the game.
I also like the backstory of the Miqo'te, what little of it we know. Their dual natured worshiping of the sun & moon, their reputation as hunters, their occultism, is all something I'd like to explore more of in my character.
I admit though, this time around what with their 10 year old voices and their overly cutesy looks, I was tempted to scrap my Miqo'te idea and make an Elezen or Hyur instead.