In the RDM Battlestar series, it was a given that the 'skin job' Cylons were trying to procreate and had been unsuccessful.
Because of their failed attempts, Helo and Boomer's daughter Hera was given GREAT importance among the Cylons as an actual physical offspring of a Cylon.
I don't remember there ever being any such great importance however placed on Galen and Cally's son Nicky.
Was there any reason for this? Or was it just because the Final 5 weren't revealed to the other Cylons until very near the end of the series and there was no time for that to be developed into the plot?