2 Small Changes to Kha'Zix R
Right to the point. First change: Using 
breaks his stealth. That's pretty fucking stupid if you think about it. "That guys going fast! We can see him now!" Rengar's ult doesn't disable his stealth, I imagine Evelynn using it won't disable her passive (although I have no idea who is building Youmuu's on Eve).
Second change: Evolved R is pretty bad. What if using it made the next Q do full isolation damage? Or for the 15 seconds he has to use all 3 charges (or possibly until he uses all 3, depending on balance reasons), targets are always isolated. Meaning he can use his ultimate for more than extremely mediocre invisibility.
These changes wouldn't be too OP for two main reasons. Firstly, Ghostblade breaking stealth is dumb as hell, and it not breaking stealth would just mean he gets a decent escape if he doesn't get the E reset. It's like having the safety of Zed or LeBlanc, except you're still pretty fucked. And for the R isolation change to do much means you need to have R evolved. So you either don't have Q or E, or you're level 16. Considering you need Q and E pretty bad, that means he needs level 16 before that change affects him.
