I can only think of Titus Welliver as Dobbs, but really this movie is so classic and the characters so iconic that I don't think it could be done, no one who would care would care. ;-)
Bernthal as Dobbs is an interesting choice. I myself can see/would like to see either Hugh Jackman or the far less appreciated Matt Dillon in the role. Oh, it would also be mandatory for Jeff Bridges to be in it--it basically suits him. And Diego Luna should join the party as well.
Now bring on the “grrrr remakes, Hollywood unoriginal, films are dead, etc” boomers like these salty asses 👇
Edgerton is not a bad choice - I just saw him in It Comes at Night and he was pretty good in that. I think the Howard character is tailor made for Bridges.
I'd cast a writer who can come up with something original instead of raping the corpse of the dead. This film is fine just the way it is and any remake would be an insult.