About these Cho'Gath changes..

A few months ago, a post came up when annie was getting changes to her ult ( which at the time had a lot more burst and could 1 shot most champions) and I believe Riot's answer was that they weren't gonna modify the "instant-stun into burst" because that was the CORE of a champion's kit and the only way to keep mobility creep in check

Might be a differing opinion, but Cho'Gath's current W serves the same purpose. It exists to keep spell-casters that are normally very very slippery in check

All these champions are now gonna be easily able to outjuke cho'gath's silence, which defeats his purpose as the "go-to silence champion"

It's similar to taking away/ inserting a delay on 's stun. The champion then becomes more harassing to champions that couldn't get away from cho'gath in time anyway ( immobile champions) while mobile ones are now gonna roll over him

Darius had this change because his entire kit underwent rework but changing Cho'Gath's Feral scream ALONE is gonna weaken him to highly mobile champions that already can dodge his Q easily.

TLDR; This change SEVERELY hurts Cho'Gath's reliability, whereas his Q was already an unreliable spell. It also removes Cho'Gath threat zone to Assassins/spell casters which was the only reason he was worth picking higher up