I just finished an evening playing back to back sessions of Redhorn Gate. In both sessions, I had the locations Celebdil and Fanuidhol end up coming out as shadow cards which doomed me to attempting to cycle through the encounter deck in order to draw them again, ultimately failing due to nasty treacheries. There's been a few quests like this where essential cards can end up discarded as shadow cards (Hunt for Gollum springs to mind) and I've decided to bend the rules a little bit with the following house rule: if a quest essential card is discarded as a shadow effect, add it to the staging area instead of discarding it. In the case of Redhorn Gate, this is still an unpleasant shadow effect as it immediately puts 3 threat into the staging area, but at least it doesn't doom the whole game into a game of stalling for time until a card comes out of the encounter deck.
What do you all think of this house rule? Does it make the game too easy or is it a sensible response to shabby game design? Do you see any problems with a houserule like this? Any comments would be appreciated. Thanks.