X-MEN is an extremely successful film franchise however, it has often struggled to develop some its core character. Instead, the films have focused on the character of Wolverine. The movies have to establish characters like Cyclops, Storm, and Jean Grey so the audience can have characters they emotionally connect to.
After LOGAN, there has been hesitancy over what would happen to the X-Men franchise. Fox’s announcement of next summer’s films should quiet those fears.