The underwater region is pleasant, though I don't think I'm entirely alone when I say I always imagined an underwater region with underwater things to do, such as gather salmon. Another quoin region is okay I suppose, and it is definitely a unique choice that some will prefer to the other four.
And while there's some pleasant art variations from existing regions in the other new regions, they feel generally unnecessary. Rather than add to the game, they just further dilute the population. Tonight, or tomorrow, when there's less traffic, I will finish exploring these regions, then unless some feat sends me there, I will never have a compelling reason to return.
I feel as if these are new regions for the sake of new regions, and the net effect on the game is at best neutral if not negative.
Ormonos certainly seems to have room, so I suppose there's the potential that you folks have something up your sleeve to add to these regions, much like you did with fox parks before. But personally, I would much prefer new regions that provide new things to do, rather than just new places to do the same things I can do elsewhere.