Talking about the DP scene (which is awesome!) would it be possible to add some conditional dialogue to that scene about Steele knocking her up? The moment of conception is pretty hot in itself, so sub-Sera acknowledging her submission despite her reservations, to show what a good slut/sex-slave she is would be very cool. The condition would be: successfully activating the "bareback" functionality on her collar.
Alternatively, the "Breed Sera!" subby vaginal scene sounds great too!
Perhaps with two options like with the recent Paige additions:
1) Steele being loving, where Sera starts off reluctant and then softens (like a few of the other touching moments with her)
2) A hard pounding option (with correspondingly coarse/heated dialogue).
Just a few suggestions, I hope they might be interesting/useful.