I'm interested in this as well. My character would be an Earthbender who's part of an "underground" (literally and figuratively) rebellion against Iluq in the Earth Kingdom who seeks out the new avatar to help them. Also a couple plot ideas: Since Iluq effectively rules most if not all the kingdoms, perhaps she has set up border patrols and guards and made it illegal to travel between kingdoms? This would be basically to keep other benders from reaching and potentially training the Avatar.