You know what? I think CertainlyT is great at what he does.
People always hate on him ever since he came up with Darius. Do people even complain about Darius anymore? I wasn't too crazy about the guy when he first came out either, but now he seems like a pretty well defined standard of balance. Darius is a melee king, if he can get you close to him and stay close, he will ruin your day, but he also has clearly defined weaknesses.
Then we get Thresh, a strong support with a lot going for him. Like anything popular, people just cry it's OP, but c'mon can anyone really say thresh is a bad addition to league? He has a story, he has unique moves. How come nobody brings up how awesome Thresh is when talking about CT?
Then comes Yasuo and everyone cries about the power creep. I mean what are people's deal, do you want less interesting champions to be released? Yasuo had a game-changing skill, the wind wall, and this sort of opened the way for more meaningful skills to be released, for example Braum's shield and Bard's Ult. The idea of directly interacting with mid-travel projectiles (other than body blocking) and even completely negating them had never been tried before, and someone had to be brave enough to step up to the plate.
point is, CertainlyT tries to make something new and interesting out of everything he touches, and everyone just hates because when you explore into completely new territory things can turn out imbalanced. But, I'd much rather have interesting sometimes imbalanced champions, rather than a boring perfectly balanced never-changing game, and for this I applaud him.
's double crit is a tacked-on passive and gives him completely unpredictable powerspikes, and it gimps him in that so long as he has double crit, he can't be balanced and it's much easier to leave him underpowered like he is now simply because of kit problems.