space rift opening

I think mass teleporters takes away from the raw visceral feeling of drop-ships and orbital drops.

Darkening the sky with my arriving armies from space feels FAR more satisfying.


Totally agree and there is the reason for factions.

well, you could require that portals could only be created in space, and not on planets (assume that positions "in space" are well-defined), because the planets keep moving around (and thus away from the portal). Then a portal could be opened in the vicinity of a planet, and quickly unload a bunch of transporters, which would then darken the skies as long as you want them to?