Everyone is trying to canonize Fusion Reborn for Gogeta-loving reasons. Well, I may have found a reasonable way to do so, but it is very flawed in ways I'm not sure of. Here goes... *inhales*
Instead of Buu taking an hour to regenerate after blowing himself up against Ultimate Gohan, they just forget about him and go back home for some well-deserved relaxation in a "calm before the storm" type thing. Videl and Chi-Chi are there because of the disruption in the Other World, but no one seems to care that they are alive again, as they are beloved by their respective admirers, and that they were pure of heart. Now, all of a sudden, Frieza and the other squadron of baddies escape from Hell, and it's up to Gohan (and to a lesser extent, Hercule) to take them all down. Meanwhile, Vegeta has been brought back from Hell thanks to this disruption, and he's watching in wait until Goku bites the dust against the monster responsible for the disruption in Other World, Janemba. The movie plays out as normal, and Gohan and the others sense Buu coming back and head back to the scene, what with Videl and Chi-Chi being once again confined to the Other World until they get wished back. As for the Dragon, they likely wished for the event in Other World to have never happened a la Fairly OddParents.
Last Edit: Nov 15, 2016 15:58:35 GMT -6 by kendall: Changed introduction
"Such is the taste of mere humans. They have no capacity to understand the dignity of my speech." -Goku Black