Corrupting potion is a dumb concept and needs to go
It makes champions that have weak early sustain and damage have sustain and damage, with unlimited gold efficiency because of how many times it will be used throughout the game.
Instead of the balance between strong early champions and those who are weak early but stronger later, they basically gave a band aid to those stronger late game champions to make them, in some ways, better than early champions who have no reason to build corrupting potion to start.
Leave it to Riot to continue to homogenize champions.