I like it, nice ying yang
Mind you, blues base is more easily defensible with static defense, because the entrance is farther dug in. Terran could park tanks on the side and bombard units coming up the ramp for an attack. Lurkers, temps with storm, cannons and sunkens even. Put the ramp at the edge of the base and its great =)
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Actually, blue's nat is harder to defend. The gas is much more open to ranged fire and could easily be destroyed taking little or no damage from static defense. (ex. MnM in tvz could kill it without taking much damage.)