When are we going to get a pure tank keystone?

Ill start off with the one that has a pretty good influence on toplane...

Grasp has alot of its power put into dealing damage and is abused by many toplaners (its not the damage or the healing, its the combination of the two along with being easy to proc and almost bully with that makes this rune good)

So if anything its a trading tool rather than a pure tank option (it fills the trading niche that most top laners can opt into when they NEED to do well in lane)

Aftershock adds loads of flat resistances for 2.5 seconds, even if a tank was to stack hp in order to synergize with it better, a tank not dieing for 2.5 seconds is almost universally less impactful than a squishy not dieing for 2.5 seconds (especially with abundance of cdr which makes negating damage over a short period of time less impactful unless you are GOING to kill the enemy)

Not to mention the high cooldown so it doesn't really satisfy the consistently tanky fantasy.

ALSO, a lot of its power is put into a small aoe that not only scales with hp but ad and ap aswell, leaching more power off of the rune.

(it fills the diving / anti burst niche, usually for squishier champs)

Guardian is the most interesting since it doesn't waste power on damage but instead gives a shield which is capable of blocking true damage, not to mention it scales incredibly well but not exactly in your own selfish favor.

It lasts 1.5 seconds (less than aftershock) but it gives a speed boost and scales with 12% of your bonus health which can be MASSIVE just not for you, no this rune is literally a sterak`s / phantom dancer for your adc. (or whatever role that wants to be offended by the squishy stereotype).

(it fills the protective/support niche)

Every tree has keystones that a multitude of champions from different roles can pick from and use to fill niches in their own way, the resolve tree is no different in that regard, it has its fair share of runes that many can use for their own purposes.

BUT

Every tree also has keystone runes that are more tailored towards champions that would basically belong to that tree (with very very few / niche users that happen to synergize well)

(Okay maybe inspiration is alittle bit of an outlier, there is no specific category of champs for this tree except ones with anomalies like ezreal q procing kleptomancy from far away.)

There needs to be a pure tank keystone that is less about trading / surviving burst and more about extended fights (like a tanky alternative to fervor of battle, something that requires combat with champions to stack up so it cant be abused as a trading tool like grasp)