I liked this map, especially the twist that was possible at the end:
Spoiler
I grabbed the sprayer tech at the start but failed to hold that position. However, as the emitters to the west started to fall, and my Berthas started reducing the creeper faster than it was produced, I suddebly could land my first base again and get the enemy in its back.
I suspect how fast you can get that third base determines how fast you can finish the map.