Electric Fence
stationary fence posts that when have power prevent creeper from hurting them or moving past connections between them.
Terraforming
maybe for some maps you could have like drill towers that take a long time and a lot of power and can lower ground elevation.
Been suggested there.
http://knucklecracker.com/forums/index.php?topic=174.0 (http://knucklecracker.com/forums/index.php?topic=174.0)
Quote from: Kgobo on June 07, 2010, 07:11:20 PM
Terraforming
In the next game.
Confirmed (http://knucklecracker.com/blog/)