The xpac was definitely made to play on feels from Wraith. However, I don’t think it lives up to the zone quality in the same ways. I do think the zones in general are just really solid and well made to highlight Dragon riding more than themselves. Which is why the zones are made on levels, probably why there have been leaks that instead of expanding outwards we are most likely going underground. Depending on how they connect the zones. I think it could elevate the current quality of them, similar to how GW2 zones are designed. With the zones being hyper connected and allowing for you to speed fly through caves to enter lower zones
I think there was some wasted potential with the Centaurs zone. Should have done more to establish their origin and connect them to the other tribes in Kalimdor