Perk Rant: Fire Up (Current) is fine
I main killer, but I am coming from a perspective that perks shouldn't really matter. It should primarily be that whatever issue a killer has, such as struggling with pallets or vault locations, is solved within that killers kit. If Trapper struggles at pallets, give him a higher number of Traps he can carry, and make the finishing trap set up sound quieter. This way he can fake setting a trap, or for real set a trap to shut down a loop at the cost of slowing down to give survivors time to go to another loop. Either way, a perk should not be how a mechanical problem is "solved" for a killer, especially because it makes every killer less unique. It's important that every killer has a unique mind game for a given problem.
Trapper can use Traps to shut down a pallet/fake a shut down of a pallet loop.
Wraith can cloak so he break a pallet quicker and chase a survivor
Hillbilly can wind up his chainsaw, forcing a survivor to stay near the dropped pallet that he'll soon break, or try to dodge his chainsaw sprint out in the open.
All of these are both different, and they're also not brain dead better than just kicking a pallet. Most of them take more time, and have circumstances in which they're bad. This means they add depth to how you want to bother mind gaming a pallet.
So, back to Fire Up. The perk isn't better than Bamboozle or Brutal Strength, absolutely, but it's a jack of all trades perk. It obviously shouldn't be. I unironically use this perk more than than Brutal Strength. Probably because it's not a good game to me if the Survivors don't get a couple of gens done. I've had enough domination games where I get all 12 hooks before the first gen pops. Not because I'm good, but because I stick to higher tier killers (Singularity, Blight, Unknown). Either way, when you do something like buff Brutal/Bamboozle/Fire Up, you're not just buffing the weaker M1 killers like Trapper/Wraith/Clown, you're buffing my stronger dudes as well. I'm not saying I want my boys nerfed, or these perks nerfed, but if they don't really make a difference in this game, that's kind of for the better. If a killer is to weak or something, they need to handle that within that killers ability, not by giving a perk you need to buy, and then will likely be put on a strong killer who doesn't need it anyway.