How is Aang's character perceived in this era?

I know, I know, it's wrong of me to say this, and I'm sure you're all tired of hearing that we should let Aang go. But I have this question: he's Korra's previous Avatar, so what does his appearance look like? Or the appearance of the other Avatars before Korra? Was their knowledge lost? Were their experiences and stories altered? Will the airbenders and air nomads (if any of them remain) feel conflicted about his appearance, or something similar?

What will the figures of other avatars before Korra look like in Pavi's era?