I wonder if that's a way to "spread" a guild - by having members living on different worlds. I don't think traveling severs guild membership - so a guild member carries a bit of their guild with them, regardless - bit like a diplomat. Otherwise, the demons would have to Re-Guild every eclipse, and that's too much work. and if you build a home on a new world, and make it a guild base, well, then you've imported your guild to a new world, haven't you?
(Of course, building a new home off world might break your guild ties in a way that traveling won't, if the devs are really opposed to guilds being interplanetary, but that is yet to be seen)
