Since Scarlett is arguably the most complete domme already, I don't want to open her can of worms until I know I'll have the time to close it again to my satisfaction. I have a few scenes done already, but not really the start or end point to the arc.
Scarlett's stuff will focus on her re-(and more deeply) breaking you after your exploits higher in the tower have either rebuilt some of your dignity (or simply diluted your mind with too much other foot-stink, depending on how heroic/degrading your head-canon).
And honestly, while it sucks that it's taken so long, I'm actually glad I'm going to revisit the original girls with the code-chops to refactor and expand them efficiently, which would not have been the case last year.
As fanboi points out, everyone is on the docket in some way.