Can we make fan-films in the JJ universe? I don't know. But I do know that a BBS member was planning an animated fan-series set in the JJ universe, and he posted artwork of the characters and ship designs. He was contacted by someone at the studio and asked to set his fan-cartoon in the prime universe, so as not to ruffle any feathers with the movie guys. Now it is going to be set in the TNG time period.