I like my Au Ra the way she is, so I can't and won't change her anymore.
Also, Viera are just too tall for my personal tastes. I'm a small female irl (just barely taller than my almost min height Au Ra), maybe that's why? Don't know, I just personally find that small women look prettier than tall women... I know it's weird.
But other than that the Viera look really nice, so I'll probably at least temporary change one of my retainers to a Viera. They just have so few hairstyle options that I like.

Hrothgar aren't really my thing. They look cool and all, but I'm sure I won't use them at all. I really like kemonomimi but I'm not a fan of furry. But I'm still looking forward to the nice Hrothgars others create. ^^