There's some good stuff here and of course a good chunk was reminders of my childhood and fandome of Batman '89 and seeing Michael Keaton back in the role. The humor for the most part was fine but got a bit 'zany' at times, almost too goofy. I did enjoy the cameos which were amusing. It did touch me emotionally due to my personal issues going on right now.
That said, this didn't completely work due to, let's say, inconsistencies in quality of the previous DCEU movies, most of them I did like but can acknowledge how the studio, in its various iterations, bungled it. And in regards to to Ezra Miller, one has to separate the artist from the art which given how much of a creep he is, is difficult to do when humor is one of the keys for the character.
All in all, it was a satisfying and entertaining movie but considering that James Gunn is pretty much rebooting for a new DCU, it doesn't matter very much and I don't see myself watching again anytime soon. 3.5/5