How X-Men’s Days of Future Past has influenced comics

Interesting piece in Vulture about how the X-Men comic “Days of Future Past” has influenced comics since 1981. “One would be hard-pressed to find a more death-filled, ambiguous, and depressing superhero tale published up to that point in comics history. Hell, even the death-of–Gwen Stacy story in Spider-Man had featured the bad guy getting his just desserts. Here, there was no lifeline of justice.”