xXx: Return of Xander Cage
The last forty minutes of the movie do come together in a pretty diverting way.
He's provided an entirely new conclusion, taking us inside the alien spaceship that visits at the end of the film.
He's provided more motivation for the strange behavior of the Richard Dreyfuss character who is compelled by "psychic implanting" to visit the Wyoming mountain where the spaceship plans to land.
He's added additional manifestations of UFO intervention in earthly affairs -- including an ocean-going freighter deposited in the middle of the Gobi Desert.
In addition to the sensational ending, he's added more special effects throughout the film. One shot seems like a lighthearted quote from Spielberg's own "Jaws." In that film, a high-angle shot showed the shadow of the giant shark passing under a boat. In this one, a high-angle shot shows the shadow of a giant UFO passing over a pickup truck.