If you're looking for inspiration, my Avengers series Love Is For Children has lots of your favorite social themes. I think it'd be very rich fodder for vidding because it was actually inspired by Black Widow's movie scene where she said "Love is for children." I just got to thinking about all the awful backstory the Avengers have, and how they really needed a chance to relive their childhoods in a better way. Also I posted my shiny new Transformative Works Policy this month.