I think it'd be nice if tailed beasts could use their abilities.
Shukaku - curse sand seal(or something like that) stuns for awhile
Nibi - Blue mouse fireballs(both singular and multi) fires off a flaming blue mouse that does damage on impact
Sanbi - Giant water bullets
Yonbi - Lava usage, lava rock projectile, lava eruption(click a place and lava spike comes out the ground), etc
Gobi - Steam usage, most attacks seem similar to dynamic entry(for the jinchuriki)
rokubi - acid usage and bubble usage, acid spray(3 tile attack that goes 1 staep from where ti started then makes acid puddles)
Nanabi - I forget this one's attacks but it has to do with some kind of dust and wind
hachibi - Ink spray seal(sprays an enemy and stuns them for awhile)
Kyuubi - Muti tiny tailed beast bombs(the explosion part doesn't cause a blast wave after)
Juubi(jinchuriki) - Truth seeking orbs that you can throw and block with.