"X-Men: The Last Stand," while decently entertaining, isn’t really held up as one of the better comic book movies, mostly because of its patchwork plot and fan service instincts in the wake of Bryan Singer’s unexpected departure. Brett Ratner, who replaced Singer on the movie, went for the crowd-pleasing move every time without wondering about how it might affect the franchise’s direction—though, to be fair, there wasn’t much of a franchise future blocked out ahead of time.
Still, Singer will get a chance to correct some of the movie’s more egregious transgressions in "X-Men: Days of Future Past," as he revealed in an interview with IGN. "There’s going to be a little of that, a few things I can repair," he said when asked about whether he’d be addressing the continuity.
Here are a few suggestions for what he might do.