DCEU

It would have been better than what we wound up with. But, if DC wants a DCEU interconnected universe with multiple heroes it is better to create it from the ground up than try and throw another hero into "Superman's" world. So a reboot wasn't a bad idea, they just chose the wrong people at every turn to put it together. And mistake #2... they started it with Superman.

They never should have. They should have started with tier 2 or even tier 3 DC heroes. No Batman, No Superman. Those origin stories have been done to death. Hire a young, fresh on the scene with maybe one hit under his belt director and have him make a Flash movie (that would have worked then.) If that works then you have your creative team moving forward. If it doesn't you can pick a new tier 2 hero and try again until you find that team and hero that works. And then you bring in a tier one hero movie. Preferably WW, but Batman or Supes if you just can't resist.

Point being, they started with Superman in MoS. When it failed, it destroyed any chance they had at making a decent DCEU because A: now one of your tier 1 (and most important) characters... sucks. And B: you're building a universe on a very shaky (and actually shaky-cam) foundation. Lets say instead they had started with a... (personal favorite of mine) Dr. Fate movie. If it fails... what does that hurt? Just leave that movie and character behind and try again. But if it succeeds you have found a proven writing team and director, and you have an interesting character you can add to your new universe.

"Who built this f#(%!^g police station." -- Leon Kennedy