Why are we reworking tanks instead of tackling the real issue

Which is, damage creep.

Tank rework is simply a bandaid fix that will probably fix nothing. Because the problem isn't that tanks aren't durable enough, it's the fact that there is way too much damage in the game.

Right now, Tanks can build full tank, and still get shredded insanely quick. Why? too much damage.

Tanks also build full tank (or mostly tank), and still take out carries in one rotation of spells. Why? There is too much free damage in the game !! they have so much damage without any damage items. Their base stats are so high that all the damage amplification they receive from masteries, infernals and other free damage sources, allows them to still do insane amounts of damage while being tanky. This is the same reason why mage supports currently exist. Stuff like Brand and Annie can one shot carries while building barely any damage at all.

Reworking tanks isn't going to fix their durability problem, or their ability to easily take out carries while having no damage items. Addressing damage creep is how you fix it.

Rework masteries and drakes. Remove all of the free damage. Make cooldown reduction harder to get again, instead of having it on every core item.