They should've banned Kha'Zix, and not just because noname was carrying with it, but because iwd played the match up miserably. Game 5 curse also had a poor team comp I would say. Sending akali in with lulu ulti against 2 exhausts can hardly be considered an engage. Especially since the rest of your team no longer has any damage in comparison to khazix, yasuo, kogmaw. Curse's team also has to naturally split up against maokai yasuo (they can't clump together), yet in splitting up they leave themselves open to kha'zix isolation which does an absolutely insane amount of damaged with evolved q.