For some reason, an insane idea occured to me inside my head. The concept of Warner Brothers making a live action DC film that did not occur in DCEU continuity but instead of those of the comics. The hypothetical film would incorporate characters and costume completely accurate to those of the comics, and would feature no plot elements that contradict DC comic continuity. The film would impact the titles put out by DC, which would tie in with the movie in the form of one shots as to be accessible to new readers.
On the top of my head, there would be two main benefits to doing something such as this. Firstly, I would reckon there would be major hype and traction generated by the mere concept of such a film, and people would wonder how such a movie with that concept would play out. Secondly, having a DC movie set in comics continuity could probably generate interest in comics as an art form, thus leading more people to comic books.
There are problems to this concept however. This idea is dependent on the notion of most superhero consuming moviegoers being knowledgable of the fact that the DC and Marvel characters originated in the comic book format. Hopefully this is the case. Though probably there are a few people who think that Superman originated with the 1977 film of the same name, and Batman first appeared on the Adam West TV show. Also there is the argument: "most of the human population doesn't read comics so why would they care if there was a movie that was set in the DC Comics universe?" If the average does not care about such a film being made, at least I think a gargantuan amount of comics fans will be excited about this announcement and that aforementioned excited would trickle upwards towards more casual Dc fans.