When Wonder Woman is added to the Bordello, all we'll really get is more of the same that we already have (especially since she's in a brainwashed state and it doesn't advance the story in any way).
It's true that the cells have a lot more content to offer than the handful of MB scenes, so I believe the way to go for the MB is to simply use it as a means to forward the story a little. MB was supposed to be a core premise of the plot, maybe it's time to bring it back at least a little.
For example some of the girls that have already been fully broken (Batgirl, Stargirl, etc) could be sent to the MB without needing to be brainwashed anymore. This could be done by no longer needing to reset their device. Simply assign them to the MB and if you go to their cell, a message will tell you they are not available tonight. The dialogue for the MB scenes can be slightly changed to reflect they are fully conscious now.
Also this opens up more possibilities imo. We've seen Bullock and Flash sniffing around Glamour Slam. I've said before that Bullock can find out the truth and being corrupt can keep quiet in exchange for access to the MB and Lex can ask a conscious Batgirl to keep him happy. Flash can be told the girls are good lookalikes so he can indulge without feeling guilty, only for Lex to blackmail him later.
And it wouldn't take too many renders for these. Seriously so many things can be done to add some spice in the game and forward the story (MB or otherwise) without huge effort, but I'm afraid we'll just keep getting new characters..