I don't understand why people want Thornmail to be a big damage item.
Thornmail as a damage item is frankly unhealthy by design. This is because it punishes people for playing correctly instead of just making them less effective.
Look, DPS is supposed to beat durability through sustained damage. That's basically the reason dps is valued over burst in some scenarios. So if suddenly they are actively punished for doing their job correctly, then they wouldn't exactly function.
And for reference, when I mean punish I mean that it directly hurts them (like a catholic nun hitting you with a ruler because you did something wrong).
Thornmail as a damage item does this. If it's good enough, its actively reflecting damage back to squishy high damage champions that can't take as much. If I'm going to be hitting myself with my own bullets while hitting you, why risk it?
But as a GW item that's built to weaken healing instead of reflecting damage, it works healthier because it makes the opponent less effective rather than actively punishing them for playing right. Now an ADC can't life steal off of a tank as easily as before, but it doesn't mean they can't kill them with their dps.
To give another example, let's look at the LW items. LW itself is an item that makes armor less effective, it doesn't make your armor suddenly hurt you. The giant slayer upgrade however punishes the target by rewarding more damage based on health difference. Because tanks tend to build lots of health, the item is rewarding more damage for tanks that are playing properly. Which isn't fair (almost like old Veigar ult scaling with enemy AP).
The mortal reminder upgrade however doesn't punish someone for building or having sustain, it just makes it less effective. Getting a GW item doesn't suddenly make Mundo's regeneration act the opposite, it just makes his healing weaker.
So imo Thornmail should not be a significant damage item because of its reflect. It should be an anti heal item. Items that punish you for building or playing correctly just aren't fun. I honestly don't think something like Giant slayer should even exist in the game (especially because items that did more damage to big health targets already exist: Namely Bork).
???
If you don't care about the thorns, then what's the point of getting thoenmail?
Randuins gives better stats, the coldsteel, 20% crit damage reduction and an aoe slow active on top.
too.
thou? That items punishes tanks for building resistances (which they are supposed to do)
punishes you for building HP.
punish you by damaging the tank (btw you are not supposed to until he is the last unit standing)
and a lot of others are unplayable in the toplane.
They always forget Spear-Man!