What happens now?

You do realize that the more one side gets nerfed into the ground, the more the game is going to be less fun for both sides. I'm a survivor main and I rarely play killer but I want killers to not be nerfed into the ground cause playing against a good killer with good perks is challenging and fun af. But sure yeah, I'll use some Kleenex to clean my "tears"

I mean you also forgot NOED Buff and I do see where you're coming from but at the same time

So onto what you said:

Ghostface- Literally was easier to get him out of his stealth mode than escaping against a Trapper or a Leatherface (two pretty weak killers in my opinion) so they fixed that and that's the only real major thing about him. He's probably A tier at best.

Hag- Poor Mobility and had kinda poor pressure, her traps were weaker than Trapper's due to the fact that you can avoid them by crouching (use UE) or destroy them with a flashlight which majority of survivors use (also flashlights need a slight Nerf at least, nothing major just slightly)

Freddy- Was literally the absolute worst killer in DBD until this rework happen. Now he's fun to play, and fun to play against too, he's not too bad (probably low A tier) and he's not too strong like Billy.

Surveillance(TLDR: still not the best perk)- Was a pretty horrible perk originally, and even then, it's still not the most ideal perk. Yeah all gens are immediate highlighted but think of it this way- all 4 survivors on different gens, the killer is gonna have to pick one of them and depending on the map and killer, these chases are gonna be lasting a while and a few gens will be done. Surveillance also sucks against SWF since you can essentially trick the killer by having 2 people with premonition or blood amber on a key, one person on a gen across the map and the other on the opposite side, if one of them knows the killer is nearby or sees the killer, they can just tell their friends to go to the other gen and when they killer gets to said gen, the other person with an alerting perk or item will tell the others ahead of time and can be long gone (depending on killer) and basically repeat the process. The only few times surveillance could be good is when it's a small map or paired with Corrupt Intervention.

PGTW- Works when someone gets hooked and even then, A. Other gens and other players B. ToolBoxes C. Perks such as Prove Thyself and Leader (yes I know how not ideal these perks are I'm a survivor main) will basically help get the gen back to its original progress in little time if you have people working on the same gen.

2+ Survivors on 1 Gen- Basically gens are kinda quick, most cases, a few gens could be finished in less than a minute paired with right perks. Honestly I don't know why you think this is such an inconvenience, this is well needed. Toolboxes basically nearly negate the affect entirely.

Instant Heal Nerf?- This one is iffy, they could of been more lenient on the Nerf but it's still well needed. Think of it this way, you chase a survivor for like 5 minutes, you knock them down, and another survivor comes by with instant heal, that's another 5+ minutes to a chase. They were BROKEN and now they're not the absolute worst but they're eh. The Styptic Agent isn't too bad, it's basically kinda 1 time budget BT. The Anti Hemorrhagic syringe got absolutely butchered so I see why you included it, but like mentioned earlier, it was very well needed, but I do believe they could of reduced the time needed by like 3 seconds or so.

DS Nerf- Now I personally never ran this perk, but it's kinda a crutch do or die perk. Refer back to the instant heal scenario, except they stun you when you pick them up, paired with right perks and map, it could create another long chase for the killer to the point that most of the gens (if not all) should be done if you have teammates with a brain. I honestly don't have an argument for this since of my underusage of the perk, but I think it's kinda common sense why it got nerfed.

BL Nerf- 1 word: I N F I N I T E S. Honestly have clue why you decided to bring up BL since it very desperately needed this Nerf very, very badly. It can create infinites especially on Haddonfield, and even with this Nerf, it's still not too shabby.

Just gonna bring up BT real quick- Yes this Nerf is easily exploitable for killers especially with Ghostface so the devs could probably look into that, however it was needed especially since depending on the kind of map and perks survivors have, and I know I'm overusing this argument, the chases could last for a good while and when the chase is finally over and you manage to get to the hook, congratulations! Another survivor was waiting and immediately unhooks them and tea bags in front of you, that basically another whole chase since you have to hit them TWICE. Even instant downs don't work against them, like Billy's chainsaw or Oni's dash attack, so that means you actually have to smack the survivor twice if you decide to go for said survivor you hooked.

Now as for Oni- No opinion. I don't know too much about Oni nor do I even have him so yeah. All you need to know- Billy is the bigger threat.

Uh don't mind me being a potato survivor who brings in not only just Self-Care but whatever Nancy's perk is.

Official Petition to change Inner Strength's name to Nancy's Perk!

I totally didn't see your unedited comment. But both people aren't completely wrong. I guess it could be based off opinion at this point