That works too. This would be a huge deal for all the streamers who wants to play this game with their community. I was just talking to one of the streamers and he said he was so bummed cause right now there's no possibility to give e.g. a name and password and then people could join.
I totally agree. Besides your teamkilling suggestion I have some of my own:
Time limit (e.g. 5-30min)
Amount of pocket knives, medic sprays etc you can find in a match
Escape possibilities (Phone box on/off, 2 cars/1 car 1 boat/2 boats?)
Items spawn rate (how many flare guns, shotguns, melee weapons etc you can find in a match)
Jason's traps on/off, amount of Jason's knives
These things came first to mind. So many different customizations you could make and keep the game more interesting. Ofc you don't have to use it if you don't want, but give us a chance to do something like this in the future. I think this would also bring many people back to the game, and also new ones.