Someone is going to shout "Touhou x Kantai Collection crossover" anytime soon...
What if a group of dedicated Touhou fans who are also movie producers got ZUN's approval to make a Touhou movie (2D/3D animation or live action, your choice)? It received TONS of advertising, making it look like it would be the greatest movie of the year. However, the producers used more or less only fanon portrayals, thus "burning" into the heads of the public concepts like masochist Tenshi, lazy and incompetent Meiling, NEET Kaguya, poor and starving Reimu, etc. The movie got mixed reception, but fans of the series were less than pleased that the producers used almost only fanon stuff. ZUN wasn't fond of it for the same reason as well.