[Suicide Junkie]

The other alternative is to increase their supply usage dramatically.

In the latest patch, weapons cease to function when you're out of supply, so with something like 500 supply usage per missile, you'd get 6 shots from a standard ship, no matter how many launchers. Adding one shot's worth of supply to the launchers would make this 6+#of launchers, plus any additional supply storage you've added.

This would be good for a serious Planet Buster missile, or a really tough & powerful ship smasher.