Phase Space Inhibitor ships will encourage battles around stars
I have a proposition:
a really huge ship capable of building frigates in forward battle. make it so rediculously expensive that its only viable when you have a whole economy created to support it. this would allow some viability in taking someone else's star, as you could create a forward defensive position. it just simply needs to be made so expensive, or detrimental in some way that its only useful for attacks that occur far outside the production/reinforcement range of your empire.
of course, if you want to be rediculous you could create an even more expensive, even more massive ship that can produce capitals... but thats kindof getting carried away.
this would make battles at stars far more viable, and if the gravity wells are increased to a large enough size, you might even have a two sided production battle with each side pumping out more and more units to send into the frenzy.
think like the carrier from homeworld, or even the mothership on occasion.
Well, since planets are the primary source for everything, that wouldn't be really surprising. To hurt your opponent and make yourself stronger you need to take his planets. There is no reason to attack anything else
which is why there seriously needs to be a set of secondary objects.