Riot About runes!

Can we have some % scaling runes?

What do i mean

Lets say % Scaling armor rune

Lets say it would give 5% armor This would mean that the more armor you build the stronger you will get so tanks to not just go like..."hmm well what 9 armor what 12 it dosent seem worthy to put more armor than the yellow ones"

But if you put 9 yellow %scaling armor and lets say the big ones would give 10% scaling

This would mean 55% armor scale!!

Now i know the number here look very high but i am sure riot can find a way to balance the numbers!! This would make you choose what you want! You want early game armor? you go for the 9 yellow armor! You want some late game scaling? you go for the % yellow armor!

And this type of scaling can be for MR/AP/AD/etc!