Come Talk About Keystone and Rune Ideas!

I'm just wondering, do you guys have any keystone or rune ideas? Don't worry about numbers, or whether it makes things op! I just like reading about things like this is all.

My ideas would be simple:

A Keystone that increases recurring damage from the same skill (Malzahar/Yorick Minions, Draven Q Resets, Heimer Turrets, Zyra plants, the Maiden, Daisy, Tibbers, Aatrox Q, Riven Q, Xerath R). I'd avoid this being case for Dot though, because then champions like Teemo and Darius and Cassio would become very annoying with that in addition to ignite which is also DoT.

A Keystone or rune similar to Jhin passive, except it increases damage by a portion of bonus movement speed.

A Resolve Keystone that did something with Tenacity. I don't care what, just something.

A Keystone that made you deal less damage and take less damage in 1v1 scenarios for tank tops to help against things like Kennen and Jayce and for mages to help against assassins while not making you an op unkillable CC absorber in teamfights.

I dunno what else.