When it comes to running animation as an Elezen, I just run with my weapons out and it changes the running animation to something better. If I were in your shoes, I would stick with Elezen, because you have a more complete character as Viera is an incomplete character with limitations. If they ever fix Viera’s limitations, I would say pick who you’re more comfortable with. Elezen are also rare and aren’t a dime a dozen as with Viera, Au Ra & Miqote. You won’t run into many lookalikes if that’s a problem to you. I’ve seen many beautiful looking Elezen ladies, so don’t go by the other’s opinion as beauty is in the eye of the beholder.