If an item synergizes so well with a champion, what should Riot do?
When Vladimir/Akali abused Gunblade, they were heavily balanced around the item. Most people felt they should have needed gunblade instead of the champions.
When Shyvana, Sejuani, etc synergized with Devour/Wonderful respectively, they were nerfed (which was received badly) and then the item was nerfed.
When Ezreal abused Iceborn gauntlet, the item was nerfed. Received badly because they felt the item should have been melee only.
When Gragas/Ekko overused Iceborn/Sunfire, item was nerfed. Did not solve the balance issues of each champion and they were nerfed in later patches, leaving the champions who would have used the item well to find other alternatives.
So what is the correct balance decision?