I would LOVE if we could buy/craft new tattoos for our Norn. The initial pick is fine when making a character, but as a people who place so much pride on their personal legend I think having new or additional tattoos as a character levels (or reaches certain points in their PS) would add something that makes them stand out even more.
I’m sure there are personal traits for the other races to evolve (?) as they level up, but I’m not as familiar with them. (Just rolled my lady-Charr \o\ )