This is actually a really cool idea. I work in the fintech industry and a simulator where we (employees sitting through boring compliance training presentations) could play as money-launderers and attempt to launder cash through the various schemes like layering etc would be a fucking awesome learning experience. I think you'd have a ready market there.
Trying to keep it "realistic" in the sense of how the structures are set up (bank reporting regulations, offshore companies, shell companies etc) but I'm optimizing for fun. It's an isometric Transport Tycoon-styled game but instead of building physical infrastructure you create financial connections between nodes like drug op -> cash business -> bank -> offshore company -> real estate investment.