Before the last episode there had been discussions and talk about the numbers of Cylons in the universe. The issue was brought up again with the Cylon Civil War. Ive always assumed that there was more than maybe just 10 or so Basestars worth of Skinjobs, but after learning that it was the Final Five who knew the secrets to resurrection, Im starting to doubt that assumption.
We know from the episode that the Larry Cylons couldnt get beyond developing the Hybrids and knew nothing of Resurrection, and that the Final Five were the ones who created the Skinjobs and the Resurrection technology. We also know that at some point after they finished developing the 8’s that Cavil killed the Final Five and erased their memory.
Now this may be a leap since its not explicitly sated in the show, but what if the Final Five also were the ones who knew the secrets to creating sane personalities (as opposed to rambling prophecies as we see with Hybrids). What if before they were killed by Cavil, the Final Five only created so many personalities for the different Models.
If there is only a specific number of personalities, and the Skinjobs dont have the ability to create them or develop them in some way on their own, it could explain why we never hear of talk about if there are other 3s alive on the Cylon Homeworld. What if the ones in space are really just it?