Season Perk (Idea)
I think it would be funny the killer and survivor dont have 4 but 5 perks. But the last one is not choseable its more of a Weekly or Season perk.
For example for a week every killer has the "Overcharge" and every survivor has the perk "Prove Thyself". This would bring a bit of variety and also makes counterplay possible.
Ofcourse the perks would not be like "total random", it would be choosen from dev. so its "kinda" balanced and not the Killer get a OP perk for free and the survivor get a useless one. I would love to see that some niche perks would be played more often like this and maybe make it into a funny combination.
The benefit of weekly vs. monthly is that if there are combinations that the dev. dindt thought about when choosing the perk and it is "too strong" its only there for a week.