It's a no for me, sorry. The reason for that is because cleaning is a part of SkyWars. For an example, I clean people when they have way better armor. That way, I still have a decent chance at winning the game. Hence is why I think fully regenerating is too overpowered. I wouldn't like to see immortality either because it may cause some confusion because you wouldn't be able to hit another person for a few seconds. Besides that, 3 seconds is enough to kill someone sometimes, so this would also be way too overpowered. Like Quis said, you should consider purchasing the ability where you have a chance at receiving a splash potion of healing after killing someone, if you haven't already!