[quote=@Regitnui]@Rokoran so where does plant- or bloodbending fall?[/quote]

Waterbending. It's all internal water, after all. I haven't got this all perfectly fleshed out or anything - I'm still faffing about with the firebending stuff - but I'd probably go with it being similar to Lightning; you can get basic internal water manipulation at Expert, but then to do mass or complex stuff, you'd need the Master-level version of the technique.