Corki takes towers down too fast.
I don't think he is supposed to be a fast pusher but Trinity force makes him literally melt towers down.
I mean, just my last game I had a Tank Corki top in the enemy team that backdoored us with TP and melted both our nexus towers down in under 10 seconds.
The thing is that he had like 9 kills and 11 deaths under his belt or something close to that and his build was literally Triforce, Dead Mans Plate and Sunfire Cape.
Luckily he died to a bomb our Zilean put on him just before he managed to take our nexus itself, so we still managed to win the game.
I think this is quite broken and needs some tweaking.
I mean, he is not supposed to be Jinx, is he?