I had thought that the Resurrection Hub in Battlestar Galactica was a bit contrived. But I just remembered that in "Resurrection Ship", the episode, Baltar said that the Resurrection Ship was built for the purpose of extending the range of the normal downloading process. So, even at the beginning, there was the idea of a Resurrection Central that the rez ships are nothing but boosters for. They were just using established canon.

Sidenote: The Final Five comic issue #3 actually has Tyrol use the abbreviation "Rez Hub". Too bad it's not canon.