Let's skip adding your most wanted race because people wanted a fierce female. If you choose races based on personality and no looks you're doing something wrong. I've seen really diverse miqo'te, angry happy, all kinds. We already have 2 "fierce" female races in midlander and roegadyn. In nature viera is far from "cute" in personality, they're stoic, calm, and caring.

Missing an opportunity twice is a mistake. SE had the choice of making a reptile/dragon class fierce and they didn't choose to. They made the males fierce. Let viera's background stay true to what it is.