What sorts of tropes/characterizations/plots do you all like that aren't canon?
Personally, if it's set up and well-justified, I can suspend disbelief or forget about the canon/fanon divide, at least until the story ends. This goes double for ideas that open up the story or take things in new directions.
In general, I enjoy when people throw in a Martial Arts and Crafts skill that we never got in the serie, especially ones that work well like Ballroom Dancing.
In more humorous stories, I like Nabiki having access to a ridiculous amount of money, henchmen, and information, particularly if it serves the goal of fleecing and humiliating Ranma as much as possible.
Thoughts? Any fanon stuff that you like because it's an amusing take or it serves the story it appears in well?