At least the wilderness map is, i have yet to check out the actul quests themselves but the fields, buildings, all recycled with a slight texture alteration. Every expansion up to this has felt original, feywild itself felt like i was really walking into a damned childhood story book! I loved it! Barvonia felt like a classic yet original Dracula storyline. Sharn made me feel like i walked into a classic detective novel, I loved that too!
Each area felt original but my first impressions of saltmarch are pretty much this:
Hopefully there's more original in the quests than just the story...