I don't believe this addresses the problem correctly.
The complaint is that there is too much damage in the game. A very, very large percent of that damage comes from the runes and item proc's.
You address this by giving everyone more durability.
It feels super bad as some of my favorite champs to be forced to wait for my runes + items to be ready in order to combo someone, instead of playing the champion and their kit. While it does provide extra interaction, i feel the scale is tipped way too far.
By adding extra durability, and not addressing any item / rune damage, all you do is force people to trade on cycles with their runes / items, and make abilities themselves even more meaningless without them.
Cool items are fun thematically, but when every item is adding 50-200 damage on my abilities BEFORE stats for scaling, it really feels like it doesn't matter what ability I level first, as long as I know what items i have.
This...