Teams should play a lot of Ashe against SKTT
There seems to be differences between regions.
For example the European teams seem to be very good at winning a straight fair team fight. Both Fanatic and Gambit exemplify this. They will walk into a team fight with 30k of gold versus 30k of gold, have it be mostly straight up and walk out with a win. Europe does those large 5 v 5 team fights where everyone has the same vision over and over again.
We have not seen that with SK Telecom. They rarely fight a fair fight. Almost none of their games have been that sort of, "We will just team fight you and beat you cause we are better at it."
What SK Telecom does is avoid fair fights. They take over blue jungle as purple team or red jungle as blue team. They totally deny vision and then when a fight does start it is basically someone dies. Even the super hyped faker. If you watch him these picks are him with an advantage and very fast mechanics.
So where does Ashe come into? Ashe is one of the few champs that can really just go "okay we have no idea where your at... oh wait now we do" with Hawk Shot. Ashe should give teams a tool to nullify one of the things SKTT is best at. SKTT have not done much to demonstrate that if they are at Fanatics or Gambits level of team fighting. That sort of "fair fight brawl" that is important in Europe just doesn't seem to be in the Korean Meta, so if Europe meets them and picks champs that push them into it that should help.
I am not saying this will be an auto win as they are still world class, but it will weaken one of the things they do better than other teams which should make them more manageable. What cannot continue is letting them dominate mid game vision like they do.