I really like playing Vi jungle and I was wondering, if her Ultimate could be canceled by reactivating the ability, refunding 50% of mana and 25% of CD. What I'm gonna say may be stupid, but every time I try to stop an enemy recall/TP and I Ult but too late, I'll go their base / passing by all the map. That's it. 
VI main here. No.Vi is already very strong (Especialy with the stunlock / lot of AA reset that she have) Also Vi's ult is a point and click knockup / knockback that deal a lot of damage. It's an easy to use spell that is already strong, with very little counter play (Banshee / Suport peel). She doesn't need that.
actually a lot can stop her ult. i play alot of vi. i know the fizz's E can stop it and it goes on CD even if it doesn't connect. Vlads pool, anything that makes you untargetable. zyhonas included. Can't tell ya how many times i ulted under turret only to have the enemy stop it. the tooltip SAYS its unstoppable, but not entirely.
