Despite Flash being my favorite superhero and obsessing over Batman in '89 (like every other kid), I did just that. And it was a lot of fun.
I wouldn't have made the sequel to the Keaton movies an action comedy, but I have to admit the comedy half worked great. Solely because of Ezra Miller -- real world issues aside, tremendously talented in a dual role. The action side had a few cool moments but was marred by horrible CGI and a nonsensical plot (should've stuck with original Flashpoint and had Negan as Thomas Wayne instead of making up the most convoluted time travel theory ever).
Also...
While I fanboyed out over Cage's Superman fighting a giant robot spider, all the Crisis-esque cameos at the end felt like a waste of time and special effects budget. At this point, how much of the audience under 45 recognized any of them?
The whole thing reeks of death by studio notes, but Miller's performance made it worth watching.