Next question: beefy or lithe (and whatever the female equivalents are)?
Somewhere moderate for both male and female would be my ideal. Bull is too much for me, the contrast between his body and head size too stark, but I do see the male KISA as ideally being very muscular.
Female, I just want some notable musculature in the arms and legs, but like Cat said, softer facial features than Aveline's would be good.
Elegance is really the main thing for me. I'd like for both male and female gay KISAs (both of which will so definitely happen in the next game) to have a certain elegance to them.