Dear friendly survivors: Please play the match first
When I'm on killer I prefer being friendly and letting everyone live after I've deathhooked everyone, but if you're a survivor trying to be friendly/goofy/cute with the killer, that's great and all but at least wait until you're deathhooked before trying those things.
It's insanely unfun when you guys try that stuff at the start of a match. Play the match first, try to get some gens done, have fun in some chases, etc. Once you're on deaths door, that's when its time to see if you can befriend the killer.