While most comic book film properties take liberties with the story to better suit the medium of film, such as Phoenix from X-Men 3 being an innate power of Jean Grey instead of a cosmic force that chose to inhabit Jean Grey or the organic web-shooters of Spider-Man, there is one glaring factor that will always put comic book films, with the exception of a few stand-outs like the Nolan Batman franchise, and that is the naming scheme of these films.
I think these films should adapt a subtitle style of naming, which would allow a greater since of continuity from story to story. What about James Bond? There have been five people who have performed the role through various films and that is one of the longest running film franchises ever. Yet you don't have James Bond 2, James Bond 3, etc. You get strong names for each film, plus you don't have to have a cobbled together origin story that movie going audiences are already familiar with because they saw it three films ago. Recasting your lead doesn't mean you have to restart the story. Comic book movies need to stop being studio cash grabs and start cementing themselves into film with the power of longevity.