Before I begin, I would just like to say I am not trying to insult these characters or those who enjoy them but would just like to have a real discussion. I love both of them profoundly and say that they deserve all of their popularity. My main issue here is that I feel like DC is giving them too much spotlight and in turn is sidelining characters who have a lot of potential.
DC stories often revolver around these two big characters and stories that aren't even about them often turn into ones that are about them. If they paid more attention to characters like Shazam, Cyborg, Martian Manhunter and many others they could greatly expand the popularity of different characters and increase the size of fan bases rather then relying on two characters.
Again, they are the two most important DC characters so it isn't surprising that they get so much attention, but I can't help but feel that other characters get robbed of a lot of different opportunities because of them. Before this turns into a toxic Batman fanboy vs Superman fanboy thread or a thread where people throw stupidly unjustified insults, please keep in mind that these are fictional characters.