Basically title. The change to vacuums is simply not working.
It literally needs a 2s CC, be it stun or snare, to even have a chance to land. Unless you have 2s CC of your own (and there is only a handful of them as is), or someone else lands a stun for you (which even then is a waste, because you can use 3 other jutsus in the time it takes to cast the vacuums + the selfstun.. its basically just a stun extend), vacuums are, imho, the most useless jutsu one can have. It is almost impossible to hit 3 bullets on a moving target, unless you are some aimbot. And no one just stands still to get hit by 3 bullets or lets you get in point-blank range.
To not make it a pointless banter, my suggestions are:
1) Revert vacuums to the state they were before. Instead lock tornados to str Wind and/or make Claw runcast (it is a guaranteed hit with flicker which also cancels casts due to knockback).
2) Make vacuums instacast and drop the stun on the 3rd bullet.
3) Keep vacuums as 1s runcast and remove the selfstun after the 3rd bullet, so at least when you decide to try your luck and hit at least 1 bullet, you don't get punished for it.
Any of these would've been a better fix to Wind, because vacuums aren't what was wrong with it. Claws and nados are. As it is right now, if you are solo Wind or have a 2nd mastery that lacks any 2s CC, there's almost no reason to even learn the jutsu. It's top 3 worst jutsus in the game in its current state. Cheers.