Cenobite issue

Ok I guess he needs to use Ruin + Undying

You can play around hoarder, when you pick up the box simply hide for a bit and wait out pinhead searching for you and once he gives up you move to a safe spot on the map to complete the box. Franklin's is mostly just a meme for the most part so you won't see it ran that much on pinhead. You can't really program exceptions for the box either in terms of hoarder's functionality, the box is an item so the only way to remove the synergy is to remove the item pickup notification from hoarder altogether and that's really not a good idea.

No. It's fine. He was already unjustly nerfed, stop trying to piecemeal patch stuff you don't like.

People need to learn how to play. Different killers should require different approaches.

Hoarder USED to reduce the rarity level of items that survivors found in chests. You know, to have SOME kind of anti-survivor aspect to it. Now, it just gives survivors more chests and tells you if somebody nearby picks up an item. It is hilariously useless in 99% of games. It's ONLY value is on Pinhead. But by all means, let's nerf it further. How about it spawns 20 more chests and doesn't alert the killer. But keep it as a killer perk. That seems like a fair and balanced compromise.

It's perfectly fine for some perks to be good on some killers. Agitation is good on Doctor because it extends the range of his shocks. Useless or actually harmful on every other killer. Pop Goes the Weasle is a mostly good perk on most killers, but after its nerf, it can be hard to find the right gen before its shorter duration wears off. But on Freddy, who can teleport to gens, it's actually pretty strong. Save The Best For Last is completely useless on any killer who only has an M1, but on killers with alternate hit options, like Demogorgon, it's snowballs pretty well. Stridor is a terrible perk, but it was actually useful on Spirit, who depends on sounds. You know, until Iron Will got buffed to override it completely.

Stop trying to kick Pinhead even further. He's got a terrible power, a gutted AddOns list, and he's not even allowed to talk any more. The poor fellow has endured so much already. Just let him chill at the bottom of C-tier and move on with your life.

Agitation is bad when people want Scourge Hooks and Starstruck exists? STBFL is bad on M1 killers that it benefits the most? You okay?

Sorry, I wrote "Agitation" for Doctor when I meant "Distressing." Agitation is only useful for basement builds and possibly scourge hooks. If a survivor team is planning on getting in your way when you have Starstruck, you either don't need Agitation to hit them because they're just body blocking, or they're dancing nearby to try to lure you into a losing chase and you won't catch them even with agitation.

You may not have used STBFL very much or properly, but let me break it down: Save The Best For Last gains stacks from M1 hitting the non-obsession targets. But you lose a bunch of the tokens if you hit the obsession. If you're an M1 killer, you have no recourse with the Obsession but to either refuse to hit them or lose all the tokens you've been building up. If you're playing someone like Demogorgon, however, you can M1 all the non-obsession targets and use his pounce on the obsession without fear of losing tokens. That way you can get to max and stay at max all game long. It's pretty good on a handful of killers (demo, pig), but pretty useless on M1 guys, or killers that rely on their power for virtually all their hits (huntress).