Can we nerf Grievous Wounds (that thing on thorn mail)?

I want to see changes on Grievous Wound's test on the PBE. I'm less confident in trying to "demand" it in live, but this single status effect crushes so many champions. I'm partially convinced that this is what hurt Swain so much on his release. Mundo struggles largely becasuse this exists. I'm sure more than this changed it, but i think split push died largely because of Thorn Mail. Grievous wounds has been nerfed back in season 5 and a buff to deal with adc in season 6 (which i agree with and shouldn't be reversed).

Rather than nerf the items, can we just change Grievous Wounds? or at least test it so that maybe it doesn't kill entire strategies?

1. Only inflicted on champions under 70% HP. I feel like this makes it so that someone like Fiora can actually get a bit of healing off before maybe a burst comes through or she gets caught in cc and hurt baddly before being able to respond. it will still prock easily enough, but give those like tanks or duelists a chance to top off before getting healing nerfed by 40%. (plus thematically, it fits more with the status's name to have to have the person actually injured to inflict it).

2. Drop the healing reduction to 30%. This way it counters Spirit Visage, and Spirit Visage counters it. A champion who wants to stack life steal will have to include a spirit visage to fight off Grievous Wounds.

So ya. I don't know if this would fix the issue or perhaps overpower what it was designed to keep down. Fiora isn't hurting terribly right now. The first idea doesn't even help fix Mundo. I don't want to know what Nasus will do with this change. Yet, I really feel like playstyles like Swain, Mundo, and other drain champs/ sustain tanks are unable to really balance between high and low play with this ability the way it is.

But I'd love to see at least a small thing being tested on the PBE.