The report system doesn't pick up indirect toxicity, which bothers the shit out of me.

Which is also why we need manual reviews, just played a game where my gnar was doing everything he could to make me feel terrible because I didn't gank his lane, and usually when they type "XD", you know in reality, they're being a douche bag. It even comes to a point where they start flooding all chat with "Report Zac XD" and spreading rumors of shit I didn't do, and of course I further on get reported by multiple people. This has got to be worse than any other form of toxicity in my eyes, getting people from the enemy team to believe that you're the issue, when in fact he is. I dont know, it really fucking makes me upset and it happens all the fucking time. Too bad whenever I report someone for this, they always seem to continue playing.