[Slick]

I haven't had much experience with them although I have used them with a little success as you mentioned as missile launchers. I think in general there are some fatal flaws with them in the unmodded game. They are too expensive, too slow, they can't use solar sails, they can't be recovered and they go thru a warp point one at a time so they can't be used to overwhelm warp point defenses. The Last 2 items can't be modded, unfortunately.

Slick.