Illaoi *Would* Be Less Broken, if...
Well, we already know her damage. Lots. People say "Ohoh hoh, just kite her! Every champion is always capable of such a thing, all the time!!" Um.. Okay, but there's one extra problem with such a foolish statement:
Her tentacles can be bugged as fuck at times.
I don't know if it's just my poor, unlucky self who has faced North Korean scripters who bug Illaoi to bits, but they can make her tentacles spasm out of control and start beating me like an Arab husband at random times.
When she hits you with her E and manages to proc the lingering "Fuck You" effect (which always happens, no matter how much you attack her), sometimes when you plan to dodge the next tentacle that's coming up, it just FLINGS OUT OF FUCKING NOWHERE and smashes you down faster than you can even press your Flash button. And sometimes, flashing doesn't even work.
When she ults, and you say, "Aw, what the fuck," and immediately flash away, sometimes, if Jesus is bored enough, one of those tentacles with stalk you as you leave and somehow still manage to hit you with uncanny, unethical range and precision.
TL;DR: Either she's bugged, or you guys are some sick bastards. Either way, just remove her from the game. Don't even refund anyone. Getting her out of here is payment enough.