update: Massively Edited!
+ Show Spoiler [Nat] +
Details:
I've significantly cut down on the amount of extraenous land, though the map is still remains far more open than other maps out there.
The map's 4/5th/gold expansions are rocked off. The third is a 5min/2gas expansion. This is an attempt to force players out on the map.
The center watchtowers provide vision of the low yeild third. The watchtower near the nat does not provide vision of the base. The watchtower near the mineral expansion off to the side provides vision of the base.
Changes from previous:
The main's "wall" has been turned into an island with 5 min/2gas, of which a base can be viewed using a watchtower. The nat has been edited so that tanks cannot siege it without vision - the watchtower on that elevated land near the nat does not provide vision of the base, you will need an air unit. There should be enough room around the nat to put down AA or navigate units around to help fend off said observers.
The center remains fairly open, but with more entrances thanks to bigger center structures and attached ramps.
Strategies:
The main can be safely walled off
Alot of cliffing and drop play available.
Map is fairly open, but be wary of cliffs and siege tanks. Watchtowers will punish unaggressive zerg.
3 expansions within quick CC fly range, although two are rocked off.
Third expansion is mineral limited, but provides an easily defensible gas source.
+ Show Spoiler [old] +