Runes and Mastery Suggestions

After reading and navigating through several articles relating to the up and coming rework of Runes and possibly Masteries in Season 8 pre-season.Ive noticed that there are some amazing new ideas that Riot has put forward in order to attract the veteran league of legends player(s)or even fresh newbies to the game such as the berserk Rune which gives:

BESERK 60% attack speed after dealing damage to an enemy with basic attacks Or other Runes such as Perxie??( Meteor (Hurls a mateor at target location after damaging an champion with an ability/ spell)

These ideas are good but I have noticed since the "tank class" had been reworked the tank meta is definitely back I believe. To counteract this by Season 8 preseason bring in a rune for the new rune setup called "David and Goliath" it is like a CoC (Courage of Coloussus Mastery) however it is for those squishy champs such as the Marksman Class and some Assasins in need of some help for instance:

A 3/1 Vayne with 2 items comes across a support (Insert tank) in a bush and is instantly procs Courage of the Collosus on the enemy attacker.Leaving not only Vayne CC'ed but with less health from the damage from the ability but also an increased difficulty against the attacker as they may have just priced a 1-5 man CoC shield. This I believe is the real reason why Masteries in Season 7 such as CoC are the go to mastery for tanks and usually for Marksman/assassins are falling behind and cannot adapt to the "tank meta"

Moving back to the Rune Idea "David and Goliath (Religious or not) is the story of one person Goliath being bigger stronger and mightier ( aka 5k health Garen or 10k health Cho'gath) versus the smaller less mighty and weak David (aka all adc's 2017 or any weak champions who struggle against tanks ). Usually an ADC whether It would be in any of the positions would have 1700-2300 health at level 18 depending on items, Runes, Masteries ,etc. This Rune idea is below

"David and Goliath" Active: When attacking a champion that has with the last 5 seconds CCed you OR with more than 50% more health than your max health increases your damage to the target for up to 2.5/3/4 seconds (Increases level 6,11,16) Damage increase: (% enemy max health) (5%,7.5%,10% If the target has less health than you but hard CC's you allows you to deal increased damage to the Attacker but only For half the time and half the % max health (1.25 / 1.5 / 2 seconds ---- 2.5%, 3.75%, 5% enemy max health )

I know this was very wordy but if you have any suggestions to ways this could be incorporated or could possibly be noticed by a riot employee / developer in charge or developing the Runes/ masteries for next season that would be greatly appreciated I would love too see if this could be implemented into pre Season as I think it would give more value to the boy lane as well as squisher champions in other lanes