i know people who have hoarded lembas are not gonna like this, but once combat is "fixed" i believe lembas should be removed from the game. It is just a reminant of a broken combat system.
a person with a bunch of lembas in his inventory is not going to be killed by someone without it. and if a person knows someone is running around with tons in his inventory raiding a village, it is unlikely somoene is going to go up and risk his character where the other guy only has to eat a lembas to make sure he wins.
now because it is traded and people concider it to be worth alot. you would probably have to replace the lembas with some other good item so they dont whine.