You know what would have been really cool about cross-element bending? Like lava-bending or mud-bending? Having to use the opposite bending style.
Like, if you're a fire bender who can sense lava, you have to use earth bending style. You can naturally connect with the fire half, but have to use earth style bending to connect with the earth half and direct the whole.
Fire bender + earth bending style = lava
Earth bender + fire bending style = lava
Earth bender + water bending style = mud
ETC.
Like, it would fit so well with Iroh's whole learning from all sources of wisdom/all bending techniques lesson.












