I'm all for more content! As long as they keep the asthetic qualities of the existing zones, I see no problem in "buffing" them up. Also, there's plenty of room to add new zones between the existing ones...like between Thanalan and The Black Shroud...so you don't go from basically a desert to a thick forest. Add a new zone that makes the gradual transition between the two...trees forming the skyline in the distance, etc. Basically any areas where there's a load (black) screen would be nice to have a transitional zone instead.