Any map with a high ground S that snakes through the middle of the map will superficially resemble Cloud Kingdom. Anyways, I think you made the right choice adding the high ground back in. I really like the map layout and it looks gorgeous too. One thing I'm not entirely sold on is that high ground blocker in the very center of the map. I understand why you put it there, to better protect those two center expansions, but it still feels too constricting to me.