Robert Pattinson might actually be a decent batman. He has a good jaw which is the most important batman feature, so who knows?
Someone mentioned Hayden Christensen. He's not even a bad actor; just gets shat on for getting put in a poorly-written role. I would probably enjoy seeing him in the right role in one of these cinematic universes.
Isn't it basically canon across the entire DCEU that Batman is the character, and Bruce Wayne is the facade?