Offensive keystones need to be nerfed

Right now we have 4 types of keystones.

1. Dmg keystones, basically take these keystone and you get free damage(thunderlord, deathfire, fevor, grasp of undying)
2. Offensive safety keystones, helps you survive while doing dmg and being offensive(warlord, stormraider, a littke bit of grasp of undying too but the sustain is nerfed and dmg is buffed)
3. Defensive keystones, only one which is strength of ages, gives you hp.
4. Peeling keystones, basically only support uses them (windspeaker, bond of stone)

Realize how the keystones are so tilted toward giving free damage while defensive and utility keystones are not only outnumbered but also weak as fuck?

I am very sure the use of keystone is one of the reasons tank assassins work, because the keystones adds a good amount of base damage to the champions especially in the early and mid game.

Rito need to nerf these damage keystones.