The recent crossover has me interested in something in the Arrowverse. Specifically I'd love something with Kara Danvers/Supergirl. Ideally a superhero team-up where they're forced to work together, sparks fly, his darker worldview rubs up against her more optimistic one, etc. Eventually the tension becomes to much and they get down to it.
I'm also open to other pairings (Caitlin, Iris, Laurel, Sara, etc.) or crossover characters. I could also play other guys if you've got a specific one in mind, hit me up and we could brainstorm.