Definitely think OP should consider doing "Episodes" in addition to the current unlock system. I'm trying to think of it in terms of something that could be made easily moddable to make your own, but basically something like:
[intro scene where player and dealer talk back and forth. Setting up the game/event. Can either use sprites or CGs]
[Blackjack game commences, with optional objectives/win conditions. Options for progressive dialogue between hands and victory/loss. Also CGs for both of those]
[Here it branches again. Can either lead into a bad/hard end that forces you to restart the episode, or a different path. The example that came to mind would be a dom/sub route depending if the player won or loss, leading to a different set of cgs/dialogue. You could also have a victory lead into another in-between exchange between the MC and Dealer, which leads into another Blackjack game]
If
OPsgaylover sees I'd love to know what he thinks of this. I see modding as a big focus of this game, and this feels like a good way of pursuing progressive/story-driven stuff, like "dating" a dealer, or a progressive match where she loses more and more clothing. Could also have a "hardcore" toggle to choose whether you can restart from a hand or have to restart from the beginning of an episode.