Well, I was talking with my gf as she was getting killed in hellfire (with me laughing) and an idea came to mind. What if, every time someone 4levels+ killed you, you got a immunity for X amount of time. So say a level 90 kills you at 62. You would get a 3minute immunity from anyone who is 4levels+. The time would increase (not by a big amount) every time it happened while you have no debuff active. This way there is still a very real risk, while also providing a small, but noticeable, protection. I would say it should also be capped out at say 15mins Max. It wouldn't be anything major, and each time you die youd only get 1minute added on to your starting 3min buff. You would still be killable to anyone within the set level range IE anyone who is 3levels higher and anyone at or any level lower then you can still attack you.To add to it. You would have to be killed within 3minutes of the debuff fading in order for it to increase. 3 Minutes without dieing is very easy to accomplish (especially if you zone into a dungeon).
Idk. Just something I came up with. Not enough to make you wanna get chain killed by a friend (rez timers ftw), but just enough so that maybe the newer players wouldn't get a bit fed up. I know a newer player who struggled to get to 60+ would feel it a almost impossible task to relevel that high again so early on when they just want to hit max level.