This review may contain spoilers. I can handle the truth.
Howlin_Wolf’s review published on Letterboxd:
This review may contain spoilers.
Making the Band: Supergroup Edition.
There's no plot - besides some superbeing wanting to play Deal or No Deal... and Bruce Wayne assuaging his guilt by throwing money at problems because, as he puts it, "he's rich" ...
Aside from that, it's just two hours of nothingness, punctuated by: "Hey, there's Batman!"; "Hey, there's Superman!"; "Hey, there's Wonder Woman!" ... et al.