It just looks like you threw a bunch of crap together and called it a map. It might be kind of fun but nevertheless, very open like you stated, but does not meet my standards. Sorry.
It looks like you just blocked off the bases and threw random crap everywhere in the map. There are no real structures and it doesn't look like a lot of thought went into this. Overall 1/10. Sorry
umm...This looks kinda...I cant really put this in a nice way so ill just give it a rating on my standards if I were to actually review this. 1.4/10. No forge skills were used and its just plain under a normal maps standards.