8) DC One Million
DC One Million wasn’t that great, but the potential for it to be turned into something amazing is definitely there. The basic premise of the massive crossover tale from the late 90s was that it set out to show readers what the DC Universe would look like in the 853rd century. Superman was still alive, while the solar system was being watched over by the Justice League Alpha, a team made up of future analogues of Wonder Woman, Hourman, Starman, Aquaman, The Flash and Batman.
[zergpaid]Solaris and Vandal Savage are the main villains, and after the latter took on a leading role in the Legends of Tomorrow TV series, now would be a good time for him to take centre stage in one of these animated films. A loose adaptation of the story would probably work best, but any sort of glimpse into the future of this world could be really interesting to explore in a movie.