So i've been playing vi and I ult a kat, she flashes then teleports to an ally behind a turret meanwhile i can't get out of the ult and i'm stuck turret diving 3 people.

So I ulted fiora and then she ulted, since she was untargetable I just ended up flying around the whole fight and could not do anything.

These situations could have been avoided if Vi had a way to cancel her ult

That kat play was a smart play but when I Ulted fio she ulted leaving me in the un cc able mode wherre i charge at her, i just kept moving between teamates fio ulted and only hit her after her ult was done

there would be no knocking up at all. she'd just look like a drunk superman

didn't know it knocked ppl up, she initiated in 3s but it was kinda funny, would like a cancel for the spell though

To the OP: Never play Maokai. If someone flashes, you're completely dragged to wherever then go. And the speed of the projectile is MUCH slower than Vi's ult.

Well, first of all, that moment with Fiora sounds hilarious.

But more importantly, no. Just no. Vi's ult is incredibly strong. The fact that she hits her target regardless of escapes can work in your favor as well. Bear in mind she's completely immune to CC for the duration. Having her retain that threatening presence while at the same time giving her the ability to go "lol nevermind" if things go sour for her would be stupidly OP.