Finally GMed it and loved it.
First off - the drain in the first room was absolutly no problem. My group didn't even consider searching it.
Some suggestions for future GMs:
- Be careful with spraying colors in the lower subtier. I knocked half the party unconscious. They sat down on some floating bookshelves before the encounter (Diplomacy worked to a degree until the magus antagonized the owl one too many times) so nobody did drown, but if you hit the group and they are in the water...death in 2 rounds, not pretty. (First round -1, second round dead)
- Print out the lower levels. Otherwise it's a nightmare.
- If you want to prevent your group from going all fuzzy with Caught you can display him as REALLY reckless. My group did not have much sympathy for him after finding Virmil who was completly out of his mind, tortured and scared for his life. I tried to display him as damaged as possible. Caught being his arrogant self and handwaving it as "Bwah, he survived, I needed a distraction, what's your problem?"
Also: Mistress Koi is a blast to roleplay. It went like this:
"Hm...I suggest a deal: You bring me the fox, I will remove the water! Deal?"
(the group tries to argue that they need the water removed to effectivly catch the fox)
"Hm...I don't know...I mean, I need the water if you fail to catch him...but I have an idea! If you bring me the fox I will remove the water! Deal?"
They did the deal once more after that.
And then the gnome went back up to remind her to stop flooding the place.
And then the gnome went back up once more to remind to stop flooding the place AND left a note so she wouldn't forget.
And then the gnome went back once more to remind her to stop flooding the place and tell her that NO, the fox wasn't trying to trick her with the note, the note REALLY was left by her.
It was awesome. Though the DA almost failed their secondary mission and was only saved by the Liberty's Edge-rogue who convinced Kreighton Shaine of their point of view.