I think a good enhancement would be to have long range weapons like certain missiles or beams that could work for up to say 3 hexes around a military starbase or along the spine of a heavy or huge warship. All missiles need is a lock-on a target and enough fuel or hyperdrive engines to take them to their target. A beam weapon will have diminishing returns the farther out it goes. I think that an enemy starship that goes too near a military starbase should get stung and maybe destroyed. The terrorstars from GalCiv2 should be able to have beam or missile weapons that destroy or breakup planets with their beam or missile weapons when they are close enough or make the sun go supernova. I think that current military starbases need more of a sting to make them more useful and purposeful. Specific technology will be needed to make it all work.