okay, this is contentious, so ground rules:
NO FIGHTING
NO SHITTING ON OTHER PEOPLES' CHOICES

i will seriously block any transgressors, i don't give a fuck

all that said:

in the Avatarverse, who do you think history will remember as the more significant Avatar, Aang or Korra

they're both exceptional characters at the center of exceptional stories, and there's no wrong answer. i ask this question purely in fun, so please don't try to make it un-fun