This thread won't involve a lot of explanation. The amount of tp-killers on Survival is growing and it's becoming annoying. A possible solution to prevent these situations would be adding a 5 - 10 second PvP cool down after accepting a teleport request. Please leave your comments, concerns, and questions down below.
Support. Someone actually did that to me, put me in a hole with a cobble slab on top of my head. I just simply wore chain armor (had god mode on, as always) stood there and was like, "Hi!".