i think i can remember it being said that the meat tank was one of the leaf's taijutsu techneques, so thats not a bloodline justu, although its is useless without baika no justsu. i think that some of the other clans may have bloodlines techneques that arent nesscaryly "advanced" so to speak. so since they aren quite on the level of tghe sharingan byakugan of hakus ice stuff...no one cares