I realize that this might be a lengthy scene, but Kink is in a unique position with the variety of models with whom you work to be able to pull it off without it being completely cheesy.
I would like to see a scene in which a cuckold husband is completely feminized including implants. If you could find a male model who looks something like one of your TS models, the scene in summary would go something like this:
1) Wife who is dissatisfied with her husband's performance and who can only fulfill her with his tongue decides that he would be a better wife than husband. Informs him that he will no longer live as a man.
2) Cut to operating room where husband is being prepped surgically transformed to a woman, but wife let's him keep his penis as a reminder of what he once was. Scene would go up to the point of being put under. Cut to recovery where husband gets first glimpse of new self (a TS model).
3) Husband pimped out as full service French maid to pay for surgery. Scene(s) of husband being anally and orally used by male customers.