IMO , new superheros are fresh and great to explore but that doesn’t mean we have to put Superman and Batman on the shelf. These are timeless characters. No matter how much they screw up with them they still bring in audiences. It is time for them to treat them right specially Superman. There is no reason why WB can’t do new and fresh Sperheros ( in terms of live actions adaptations) with the old timeless ones.
That said , the flash movie needs to be on point because this is a character that has potential to be as popular as spiderman when done right.