If you're tired of replaying Homeworld over and over, reviews say that "Nexus: The Jupiter Incident" is a lot like Homeworld, but not quite as good.
Also, there's a mod out for Homeworld 2 that helps capital ships defend themselves. You can find it here.
“Activism is a way for useless people to feel important, even if the consequences of their activism are counterproductive for those they claim to be helping and damaging to the fabric of society as a whole.” - Dr Thomas Sowell