Just wanted to announce I've posted a couple custom scenarios for playtesting. They were made using the scenario editor FFG provided, and are posted on the custom quests page at http://app.fantasyflightgames.com/descent_quests.html
Darkness Under Deepwood is part 1 and The Temple of Howling Winds is part 2. Part three is on it's way. They are intended to be played keeping the same characters between quests, sort of a compromise between vanilla Descent and RTL. Still very much in playtest phase. I would love to hear feedback. Enjoy!