The recent Invasion crossover has me interested in something in the Arrowverse. Specifically I'd love something with Kara Danvers/Supergirl and Oliver Queen/Green Arrow. 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. Could turn into a one time hook-up or an ongoing romantic plotline.
I'd also be game for a general crossover psl or gpsl with other Arrowverse characters. Team up storylines, other romantic pairings, whatever. Lets brainstorm.