For the life of me, I can't understand how the casting of Kevin Costner in this (or any) role can be considered good news. He's the most boring actor I've ever seen.
I have enjoyed Costner in every movie I have seen him in.
I wouldn't presume to say that my tastes should be adhered to by anyone else, but I just find him to have negative charisma. I have trouble even paying attention to him. Once he hosted a TV documentary miniseries about Native American history, and he gave his introductory narration standing in front of a forest, and as much as I tried to focus on Costner, my attention kept drifting to the forest behind him. So I literally find Kevin Costner less interesting than a piece of wood.