This area is in heavy development right now, and is nowhere near being complete. The triggers for getting ancillaries will not be much different from the original files for the open beta. Some of the historical ancillaries will be a bit more historical in where they can be acquired. Fathers will affect the traits of their sons, and traits can affect ancillary acquisition, just like in vanilla.

We have some big plans for the future beyond the open beta. Only a tiny fraction of what we want will be done for the beta.