I just had an idea

What if Shields worked like this. Instead of every one point of shielding equaling one point of blocked damage that gets tacked on to someone's health, it actually turned a portion of their health grey, and that grey health acted not as perfect shielding, but as toughness.

So basically, for that health, instead of blocking 100% of damage, you gain 75% damage reduction until it wears off or grey health is depleted. I know Tahm Kench's E would basically have to be reworked, but and 75% may be too high a number, but at least ADCs would still feel damage instead of just becoming gigantic juggernauts every time an ADC shields them

Okay so not every shield in the game should operate like this, but Shielding supports I feel could do this