One of my little cousins was named this (not little anymore, but in my mind she's perpetually seven). She had the most beautiful soft blue eyes and almost silvery brown hair, and a very ethereal sort of presence, gentle and thoughtful. I think that helped me see
Blair in a favourable way.
I can definitely see how
Blair sort of has
Sloane energy - it's more like a blurted sound than anything. Maybe
Blair is a bit nicer in an accent that would soften the final r.
Ironically my cousin
Blair married someone who was also named
Blair.