My players thought that the hall of inventions (forget the proper name of it, but the one with all the lumber yard equipment) was really horrific. So much that they burnt it to the ground even after the fey inside it were dispatched. So you may want to have a reaction ready from Thuldrin Kreed. I think that was how I roped them into doing Revenge of the Kobold King.
Also, the scenario is really helped if you've established or will establish the hostile politics between the fey and the lumber company. A Guide to Darkmoon Vale can be helpful with this. Other adventures that might serve as good sequels include the Dungeon module Wingclipper's Revenge (Issue 132) and Pathfinder Society Scenario #43 (the Pallid Plague).