Costner is supposedly up for the role of Britt (James Coburn). Freeman is apparently being looked at for Calvera (Eli Wallach).
We can fancast Chico, Lee, Bernardo, and Harry until we're blue in the face, but the most important one at this point is Vin. Who's going to be the McQueen to Cruise's Brynner?
And this seems to be moving FAST. While I knew MGM has had this on their mind for years, I didn't expect it to get off the ground this quickly post-bankruptcy. I just hope the script is great and they snag a really good director.
EDIT - If I were Daniel Craig, I'd lobby for a part in this as long as scheduling permits it. Poor guy NEEDS a non-Bond hit. I'd kinda like to see Viggo in this too.