Only thing I don’t really disagree with is the tanky with natural sustain part.
Get caught in any serious damage attacks and Thorn will go down quickly. Her sustain isn’t that great either. Her sustain can really only keep up with nicks and scratches, same as an overshield. If she goes under half you need to be gone same as any other character, and her regen isn’t fast enough to just hide behind a rock until she’s healthy. Sometimes I’ll risk super quick hit and runs at half, but I usually get punished for it if I do.
The only thing her health regen is good for beyond small damage is at half health you can do some shard collecting and hit your teams Thrall camp and come back to the fight right away, but if you’re already at your camp it’s not like the supply station would add that much time to being away from the fight.
If something has to be done to her damage I’d recommend a small nerf to her ultimate.
People are complaining about her blight field taking out minions too quickly early, but that’s all she’s really good for in the early game. Except as an anti-tank. Her arrows can put out some serious crits to big easy targets.