I enjoy the occasional comic-book based film, but I can't be the only one who has become fatigued by the endless parade of superhero films. I can't be the only person who misses the days when movies had interesting and novel premises and some actual characters with depth, am I? There does seem to have been some sort of crowding out effect. Sure, some films with interesting premises exist, but truly new franchises are rarer than they used to be. It seems there is only so much capital available for making films and only so many spots available in theatres. That said, it seems the most banal comics get the most attention from filmmakers.
That said, there are some properties that were so successful it is surprising that Hollywood ignores them. One such case is Spawn---a property that seems ripe for a remake given just how botched that film was and the amount of time that has passed since it came out. They successfully salvaged Judge Dredd, which faced similar problems with its initial adaptation. Spawn had an interesting premise in combining the Faust story and the superhero genre; and it was, for many decades, the most successful independent comic that had ever been published.
Of course, the few interesting comic book properties all face the problem of being too violent to get the magical PG or PG-13 rating needed to maximize profitability. This is, of course, the reason that the 1997 Spawn film was so utterly terrible. The original comic was a very hard R. The comic relied on presenting highly disturbing material in order to achieve its effects: It relied on the novelty (at the time) of seeing adult themes and extreme violence in a medium that was traditionally reserved for children. Indeed, most failed comic adaptations seem to be the result of playing up campiness in order to become more family friendly; consider the case of Batman and Robin in the original Batman film series. [Of course, the history of the comic code plays a role here. Ironically, prior to its implementation Spawn would have fit right in. Some of the old Tales from the Crypt comics, for example, still qualify as disturbing---the most famous case being "Foul Play."]
And there is the role that China plays in all this: To really get the big bucks, China has to approve the release of your film. And Chinese censors are notoriously unwilling to accept complexity or ambiguity---as are Chinese audiences. Decades of communism seem to have seriously eroded their aesthetic subtlety.
[Actually, it appears there is a Spawn film in development, which looks like it is being written to receive an R rating because of Joker's success. While I am still tired of superhero stuff, it promises to be better than that mindless Marvel drivel.]