Currently the SK job is pretty lackluster and literally just a better cultist with some negative effects applied. (slowing down)
In order to make the job an actual job where you get to be a serial killer, there are some changes I think should be made.
1. Remove the normal kidnapping bludgeon and replace it with a syringe like with drugs. Have the effect be instant KO like the current bludgeon but you can hit anywhere like with cuffs. Keep the slowdown effect but have a cap so that you don't end up literally frozen, which is very stupid,
2. Remove the 2 hour cool down per person and replace it with a 10 minute cool down per kidnap. This lets lowpop servers still have plenty of options.
3. Allow users to randomly kill ANYONE they choose - essentially valid RDM, and have it count torwards the kidnap timer so you cant mess with the cooldown.
4. Add the slowdown effect for anyone looking at the SK after they kill someone for a certain amount of time to balance out the random killing. In order to commit a murder without getting caught you should do it away from prying eyes.
5. Add a chair that forces ragdoll'd kidnap victims to wake up in and cant escape from, but can suicide once they reach their timer.
6. Lower the kidnap time, it's ridiculously long. Half that shit.
7. Give increased XP and increased prison time per kill, increasing the risk and reward the more kills you get without getting caught.
This allows more playstyles for the SK job, and gives it a bit more depth to what you can do. Want to be a creepy serial killer who micspams food chewing asmr while you slowly kill your victim with a spoon? Go for it.
Want to go on a murder spree till you get caught in a jack the ripper-esque manner? Go for it. Choose how you want to serial kill.