1- "Dark Phoenix" features the third alien element in the saga (D'Bari). Adamantium comes from an alien substance extrapolated from a meteor, and Apocalypse's special armour and body-swapping equipment/base is obviously alien (Celestial?). 2- In the original timeline(s), the Cosmic Force was orbitating around Earth in 1992, but the "Endeavour" shuttle wasn't there, as well as the X-Men (more specifically, Jean Grey). So presumibly, the Force ignored Earth and kept travelling across galaxies as always. D'Bari people followed it... elsewhere. 3- Hank uses a different (new) serum, because he can convert into Beast without getting "angry", as evinced before the train fight. 4- Mystique is the third X-Man to die in the final timeline, after Banshee and Havok. 5- Vuk must be a "mutant" D'Bari and not a normal D'Bari, because she managed to handle the Force and absorb it from Jean. 6- The helmet Magnet uses is the original one from "First Class", apparently. 7- DP Selene resembles LS Callisto a lot. 8- Beast is the first X-Man to join the Brotherhood of Mutants. 9- The Mutant Containment Camp must have been existing BEFORE the events of "Dark Phoenix". This means that humans STILL secretly feared mutants, despite the X-Men had become national heroes.