Gotta make peace with the fact that if they do make a movie anytime soon, it'll likely be with Cavill. He's not universally loved in the role, but he does have a fandom, and it's more than they'll have if they go back to the drawing board with the young unknown all over again. It's also gonna placate most of the Snyderverse hardliners. I guess it depends on how much potential they see in the property. I think if they really trusted it, they'd reboot fully, but that's me.
Cavill's been passionate and faithful to the role, you gotta give him that. He's become a better actor, too.