Although I just started Xcraft and i'm quite a noob, but still, think it is interesting suggestion...

I guess it will be great at some point for very-very advanced players, who have at least entire solar system with planets under their control, to build some kind of Dyson sphere to harness the energy of the star and transfer it to all his planets of the system.

also, maybe for those "system lords" can build defense for entire solar system and not only planetary defense, and use this energy to power it.

Hope developers will find it interesting