Kai'Sa... This Counts as a Bug

I keep finding myself wondering how drunk Rito's balancing team is. Many times over I'll just go fill and then boom Kai'Sa support, jungle, whatever. Every time she'll end up being 200 health and somebody will go in to kill her... well... that doesn't work. No matter what champion it is, I have seen countless drop dead to a 200 health Kai'Sa because she just presses Q and E then ur dead tank or not. Like Rito let me explain something, you can't balance the game's amount of OP champions by creating more OP champions then buffing some to make THEM OP TOO, and ignoring all the others. It is just luck now what champ you get out of the capsule, if you get an OP champ there useful, anything else is just useless. Like you say "Play league we have over 100 champions!" when you should be saying "Play league where you have a 1 in 5 chance of getting a decent champion who isn't the most useless trash you've ever seen!"