Your hex map is dope. Also I really like how you opened the adventure:
"Intrigue has met its match with the riddles this module presents! Who are the Children of the Bat? What is the Soulstealer rampaging across the countryside? Where is the infamous Desert Hoard? When did the Sheriff of the town of Strange-Tune die? Why is a Sorcerer running for Sheriff? All will be revealed by intrepid and cunning adventures. For riches and infamy!"
It is a bit wordy but I think you're headed in the right direction here. maybe the 3 best lines could be used as grabbers in the new edition?