I picked up the Draida Bay set last night and play tested it over dinner with another AFOL at a restaurant near our local Lego store. It was fun, but being such a small set and not having the specialized weapons or treasures, it was somewhat limiting in the variety of gameplay. The entire line of sets looks fun and seems that it expands on the rules to add new things.
One fun "homebrew" rule that we came up with last night was to keep the defeated monster in our hero packs and then have the ability at the beginning of any of your next turns to place the monster back on the board (1 per turn). That turned a 5-10 minute game into a 15-20 minute game! Made for a lot of fun.
I like the openness of the game and the ability to expand it ourselves to add new levels, etc. with little effort. It's a great size scale to work with and I am eagerly awaiting my purchase of the other 3 sets in the line!