Death must be more difficult than now. What death does? Loses amor, loses all items, then teleport to random "hospital" or "respawn point" with 10 HP and weakened status... So, if you have no items, death = nothing, you can even specially die to remove radiation effect, or teleport more close to your distination. I can't understand why do you need "Rad-Away" at this game, same as Doctor, you're blinded or crippled leg? What a problem, put all items at tent and then go die somewhere.
So... 1 or 2, or 1 and 2.
1) Lose XP when die.
2) Don't remove cripple/poison/radiated effect after death.
P.S. Also poison.. lol even with Endurance 1 you have faster regenerate rate, than poison kills you. So poison = nothing. Poison must affect endurance and agility, not dealing 1 damage/100 years.