I do not have the answers you seek, but I too would be interested in these things! I often wonder about Cylon Centurion society, just like I wonder about Cybermen culture, and what the Dalek do when they're done exterminating people.

More: why did the metal cylons want flesh-and-bone 'descendants'?
This strikes me as particularly tragic, as the best story I can come up with is that the Centurions wanted to be flesh and blood (it just looks like so much more fun), and though they could not achieve that for themselves they set out to do so for their 'children' (and then their children decided they were obsolete, stuck them with inhibitors and all that, etc etc). But then I get confused about the Final Five and the chronology and all that fun stuff.