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.
“Every record been destroyed or falsified, books rewritten, pictures repainted, statues, street building renamed, every date altered. The process is continuing day by day. History stops. Nothing exists except endless present in which the Party is right.”