Controversial take but hear me out. Currently Lightning cutter is unblockable move, with very wide range, and if lands it stuns you. In the current meta its the perhaps top 1 jutsu to get, alongside the WM str's one if wanna be fancy.
My own issue is that there is noting you can do against it. Sure you can sub, but even then you are punished by it, unlike other jutsus you aren't completely save, and there is no way to clearly get ouf of any sort of combo against it.
My only suggestion is its range to be slightly nerfed, considering the advance one allows you to move while charging. That way its not 100% hitting in pvp, or can even escape if you see it, unless you were already stunned by something.

