“Development hell” is a term for a creative project that struggles to reach completion. It has parts in place but can’t seem to get them moving enough to reach the finish line. Artists come and go, projects move from company to company, and sometimes money falls through at the last second. To say that Fox’s GAMBIT movie, part of the X-Men Universe is having trouble would be an understatement. It’s currently sitting with a 2019 release date, two stars attached, and a bustling studio behind it.