They're usefeulness depends on their numbers, weapons, size, speed etc. My own little killer, where 14 of these fellows can bomb out a dreadnought (in both tactical and strategical). I've got a strike force of them heading towards a neutral, on heavy carriers of course. The poor neutral won't know what hit them, when my Mine Nought mines the only warpoint leading to a neighbour that might aid them, and mu troop ships dive in. That's real fun.
