It works if you get Bald, Cavill, Reynolds, and whoever ends up playing Flash, Wonder woman and Aquaman (DiCaprio woud be awesome, but they'll probably saddle us with Vincent Chase
)
The problem is they might do something stupid and recast all the characters, in which case it's not even worth doing. This is Warner bros, so you never know. They've been hit and miss in their handling of superhero franchises these days.