The DCU will likely fix one of the MCU's biggest issues
The one thing that is amazing about the DCU over the MCU is the fact that, from what we can tell so far, the DCU is willing to do something the MCU has trapped itself with for almost 2 decades now.
The MCU has no real recurring villains.
One of my favorite Avengers stories is Age of Ultron and Rage of Ultron.
The thing I love about Ultron is that he could literally always back himself up somewhere else and come back when he has the resources. And I hope they reveal one day that he has... because it would be amazing to see a real apocalypse-level multi-year spanning story where the MCU is under the rule of Ultron.
That being said, I thought of this whilst realizing that MoT will likely have Lex be a villain near the end of the film again and likely try to betray Superman at one point. This made me realize that I haven't seen a recurring villain in a Superhero movie in ages (probably the only example would be Magneto)