Rejected we will not touch kingdra because she's good as she is now. You already have water tornado, draco meteor, sleep talk, dragon breath (it does hit quite a bit but ofc only in 1 direction), water spout and even clear smog.
Imo removing dragon breath would be a nerf and i don't see a problem in giving her ref and rain if u want "water" pokemon and let's be honest with so many water pokemons i would pref it being more dragon than water.