I really hate that DC thinks tone is their biggest issue. Tone is fine by me. The darker tone was fine. What didn’t work in BvS was that it was a narrative mess, with not enough character motivation, and an obvious need to bloat the film with a billion different hefty checkboxes like doomsday, Wonder Woman, and supermans dearh. Tone was the least of their problems. Which is why I’m pretty sure Justice League could just as well be BvS + a ton of jokes if DC keeps thinking that was the big issue with BvS.