I'm personally not a fan of the trees or the really long cacti, or how the terrain was made. I ran around the map and it did not seem like there was a lot to do or explore. As a terrain map it has to be an amazing terrain for it to be accepted solely on that. I like the unique approach of the 1.7 style terrain but it's just not appealing to me. I'm going to with a 0 .
Some things you could do is get rid of the random dirt patches, and the mycelium, and make the desert more smooth with it's integration into the terrain to me it just seems there not apart of the terrain but that also mmight because it sticks apart from clay. Also adding more places or structures to explore would not hurt. As Biblius said it reminded him of Native Americans so maybe you could add like a spiritual fantasy like area under or around the map somehow.