The fact this movie's been made, and ready to go for years gives me little hope for it. Perhaps its just a case of the powers that be underestimating its true quality, or potential. If it turns out to be a decent flick, with strong reviews, and box office, and doesn't directly mention, or tie to any other x-movie it could end up being a perfect staring point for MCU's version of the X-franchise. Even though that seems unlikely, and too unconventional for Disney/Marvel films.
I can't help but wonder how Disney is gonna creatively introduce the core concept of the X-Men into the rest of their MCU. Perhaps at the end of the next phase, or 2 of movies one of them should end in a massive public backlash against superpowered individuals. Thus, making fear of natural born superpeople a little more plausible in the movie world. Perhaps a little retroactive continuity that resembles elements of X-Men:first class where its been a global governmental secret that's been exposed in some sort of disastrous fashion. But, what could be more disastrous than 50 percent of all life turning to dust only to return 5 years later? Perhaps continual infinity gem usage results in a global mental block created by a guy in a wheelchair becomes undone rerevealing mutations to the world. Or the gems cause children born within that time period to become teenagers who mutate at puberty, much like the mutants of the comics. Make them all kids, and teens, even Prof. X And Magneto. The same said gem shenanigans perhaps even resulting in 4 astronauts getting gnarly powers...