I just suggest that you can give launchers attack priority like blasters. It would be deepest creeper (default), or the half densest creeper (Midtone). Reason being I sometimes attack dense creeper with a bunch of launchers, and they all target the same little spot decreasing their efficiancy by a lot. If they could target 2 different things then it would make them a lot more efficiant.
See this topic (http://knucklecracker.com/forums/index.php?topic=7229.0).