Man there's a lot of good suggestions here. My main issue that's always pushed me away from kitpvp has been the exits from spawn. It's quite annoying to have 5+ people follow you to jump you as soon as you drop and I believe it takes away from the fun. My suggestion is to add a villager or a sign that you can click on and it will randomly teleport you to a platform around the map. I'd also suggest disabling the ability to teleport back once you click this random teleport so you can't exploit it and keep trying till you get the platform you want. To add onto this adding a method that wouldn't allow a player to stay on the platform would be ideal also.