Theorycrafting: All tanks steroids come with a small scaling % damage reduction

For example

When he uses his W it doesn't give as much defense as it currently does (For the sake of argument lets say it gives half as much) but comes with ether a Scale with rank or Scale with stat % damage reduction

So (Pulling the % numbers out of my rear here but still, context)

Currently with his AR,MR and HP would be (disregarding diminishing returns which hey that's another idea, remove that from Armour and MR, runes and masteries)

Health: 3780 Armour: 351 Magic resist: 133

so his shield would be around 740

But what if the shield had ether a flat (Say 2 - 10% damage reduction) or a scaling (say 1-5% of combined AR and MR) Damage reduction

Say an ADC does 1k damage a hit and since 1 Armour is 1% effective health Naut technically has 3780 normal health + 740 tempt health with his shield and 13267 "Effective" health (351% of his normal health) from so that would mean (give or take) it would take 20 shots to kill him, that's if Armour pen wasn't a thing with he has 157 Armour and thus 5934 effective health, just about half as many shots, and this is just if an ADC is hitting them

comparatively if he had the % damage reduction then the ADC would be dealing ether 900 a hit if it was a flat reduction or (going by the 5%) 800 when the W is active so doing the match

3780 + 740 + 5934 effective / 800 would be around 12 shots or 11 with the flat damage reduction, "It's just like one extra shot" you may argue but at the same time that might be enough to throw out one more spell or give your team that little bit of time to take out other targets

The idea of this is to see what people think on giving tanks with activate defense steroids a % damage reduction since nowadays Tanks are being obsolete and Bruisers are just "Tanks but better" giving Tanks this might make them relevant again