For the fic trope ask game: historical AU, canon divergence, crossover!
historical AU: A++++! I love a good historical AU, especially if it’s well-researched! I’ve written a few, but mostly oneshots (and somewhere I think I have some half-assed notes for a West Wing AU set during the early 1900s during the women’s suffrage movement, where Amy, CJ, and Andy are members of NAWSA) and I’m not sure if I have the time or attention span to commit to writing a big one, but I love them and the people who write them are fandom treasures
Canon divergence: A++++++ as well! Love a good canon divergence, they’re so FUN and the possibilities are endless
Crossover: A+++++++++++ I used to write crossovers with Downton Abbey and Once Upon a Time, I WILL write those TWW and ER crossovers, I NEED ER characters to meet the Pitt characters, give me all the crossovers, I love playing with characters like dolls and seeing who would get along with who.