As things stand, the DC Universe is a strange unknown. We know which films are going to be released, we know that the Justice League are currently setting up shop to do battle with the Avengers for the worlds box offices, but we dont know what any of those films are going to contain plot-wise. Between now and 2020 were going to see no less than ten films from Warner Bros. and DC. Thats two films a year, with Gal Godots Wonder Woman, Jason Momoas Aquaman and Ezra Millers big-screen Flash leading the charge in terms of recognisable heroes after Batman and Superman get their capes in a tangle in 2016s Dawn of Justice. On top of that were getting the villain-centric Suicide Squad, not to mention Shazam and Cyborg, which should really help DC to distance itself from Marvel Studios. Its an exciting time to be a DC fan alright, but there are still a few things that DC needs to avoid when plotting its movies. Certain plot points, characters and happenings that really must avoided if the goal of a DCU is to get a chance to be fully realised. Some would be stumbling blocks, some could be universe killers, but all should be avoided if possible. Heres how DC can give itself the best chance of success...