2 Works by Traincat in X-Men: First Class (2011)
The one where Erik is Batman, and Charles is kidnapped roughly once a week.
The one where Erik and Charles get engaged, Raven is an x-treme wedding planner and the kids get way too involved. Oh, and there are doves everywhere. Modern slightly!AU, where everyone is together and alive and happy because it's weddingfic and weddingfic is allowed to do that.