I'd love to see individual alignments of orbital or cosmic bodies. Atm. on EU server there is a giant other-world sphere hanging in the sky. I loved this. Although it would be very difficult to capture this bypassing planet in between a built arch for example. One, or many could errect a giant pillar with a gigantic plate or bowl shaped top. And capture a Bypasser (orbital body) on top of it. I think, or at least I assume, there would research to be done ingame, how those orbital bodies behave.