Emomina could not be less complete in his comment which I share 100%.
I have not had the chance to visit the dungeons yet, but for what is related about the spots which could be used for RP I see a lot of potential in this new area. What I liked particularly was the variety of new items at the bazaar, while the new heating system is really something making you feel the pain of characters, as the cold on Barovian mountains.
The Barovian claustrophobia is felt in a different way, with the legalized slavism and the lack of chance to move too far from the town because of its vital resources as water. The dunes give, on the other hand, agoraphobia, as some of the wild lBarovian landscapes.
I look forward to many adventures in that place, being me DM or player-side. I expect a lot of stories coming out from Har-Akir.