Some good things about antiheal:
There's no "real" counterplay to healing as it is in the current game which is actually a huge problem. Something does exist to stop that which is awesome.
It feels good to use and is very clearly communicated to even the newest players somethign is going on that is more than just a numbers change. It's interesting and easy to wrap your head around.
Some bad things about healing nade:
The best counterplay to healing in the game is attached exclusively to the best healer in the game. What.?
In it's current iteration it feels like shit to get hit by more than it should. You want things to exist that trigger an "oh shit" moment where players need to make a quick decision how to handle it. It's interesting on both sides. Losing out 60HP is a ton on a large AoE, and in most situations the 60HP chunk is enough to get them to bail.
Why having antiheal at % is bad:
The clear communication of how the ability works is gone. The powerful and good feeling of using it goes down by a lot because:
Now a new counterplay ot the nade is just to heal nuke whatever got hit by it, and we all know even if you make that thing take away 90% of healing another Ana + a Zen orb would keep a 200HP hero alive through fights still. Counterplay to nade already exists, making counterplay boil down to "hurr durr have more numbers" is shit. This is why barriers are kinda shitty atm btw.
That's just how I see it. I think taking the damage from heal nade down to 30 is the right move still rather than fucking with the antiheal itself. The 100HP heal burst can also use a tweak, but I get that self heal is important. I saw an idea to make the 100HP tick up over a second or so rather than be at 100. I think that might work? Only real problem I have with that is it feels less "bursty" and impactful against things like ults.
Really? The current userbase seems to want to chop her legs off. They barely raised an eyebrow to that insane zen buff.
The current userbase needs to be weened off her rather than just have her swing around and Zen come out a monster because they don't know any better. I fully expect her to actually eat a grenade nerf at some point, but doing it right when they are buffing Mercy/Zen and to an extent Winston is kinda eh.