[quote=WrongEndoftheRainbow]
Hmm, I'll take your word on it, mostly because that leaves me a lot of leeway to completely design my own form of Combine space exploration. The game lacks any info of what the Combine would use in space, if the Citadel itself is not spaceworthy, so I can easily piece together my own tidbits to form a completely unique style of space travel. Good practice for sci-fi writing. Of course, that's dependent on whether or not I go with the Combine as opposed to SS13.
[/quote]

The Citadel [i]can[/i] cross dimensions on its own. So you could be a citadel, but you'd be stuck in Tattooine orbit. Still be pretty cool. "The fleet was finally preparing to leave... THEN A BUILDING APPEARED"