When player dies and death toll will decrease your stats. You may get locked using items. So if player achieves getting Plate Armors to 100, player can unlock Royal Armor. This unlock cannot be removed anymore. On death, toll may drop Plate Armors multiple points. After death player gets locked using armors and this is stupid. Death toll should only may remove using some stats but not get locked out.
Also sometimes players wants to lock their current skill level so it won't take too much points from others. After death skills may have dropped and system is not enough smart to get them back. Instead hard locking skills. Players can set their Max status. So if death takes points it still level the skill after training back to its original state.