My guess,mostly based on the fact that so far when we see a leash scene in a stream,we always get a content with that character.
-Stargirl
No idea how is going her tv series,but now she is more popular than before.Plus another long-haired blonde to add to the harem after Supergirl and Artemis.
-Livewire
She is almost done.We are missing what?Sex and leash scene only?
-Poison Ivy/Harley
Probably the most loved villainess.If later Catwoman join the party,we will have Gotham City Sirens.
-Blackfire
She is the henchwoman that is more different than other 5.Probably she is the closest one to superheroine(read as she is mostly reluctant to obey Lex).
-Circe
We defintely need more magic.I can see her as third wife or at least her place as a third teleportation point.
Also the potential events we can get
![Love :love: :love:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Circe/Tala
Circe/Zatanna
Circe/Wonder Woman