Champions should be balanced internally
Items should be something you buy to boost your character. No champion should be specifically tied to specific items. We have seen so many problems arise because of this.
The Rylai's problem The Armor Pen meta Even the old tank meta
They are all products of "Morde and Aurelion need Rylai's to be viable and strong, but then it's a problem on Cassiopeia and Kayle!" No, to me it sounds like what Morde and Aurelion need are their own tools, in their own kit in order to be strong and viable. So Rylai's can be adjusted as needed without killing them.
This idea of balancing champions through items is dumb, because any particular item that is toxic on one champion
preunrework with any on hit item for example, means anybody else who buys on hit items suffers
. And it works in reverse "
is toxic!" but then "We can't nerf it because
and
need it!"
Here is an idea, let's make champion's kits fully internally functional! Then make items this nice bonus you buy with stats, actives and passives. Instead of saying "We are releasing a new mage, but guess what, he doesn't function correctly unless you buy Rylai's on him. Which means that item must be strong for his sake."