it would be interesting to see a "sleep" mechanic... the balorg doesn't resurface until XYXYX (threat, or whatever stage of quest) but THEN, the heroes have to flee back and run from him... imagine they fight the balrog - and win - storywise impossible, see the movies... etc...
Scenario: Don't Wake Daddy!
Satisfying Condition: Heroes take turn running up to the sleeping Balrog and poking him. With each poke, add 1 card to the staging area. When players draw the "Cranky Grandpa" condition, the Balrog wakes up and yells at them to get off his lawn.