Now I do think that a Young Dutch and Hosea up to Blackwater be cool. But what "redemption" would there be. Jack is perfect because he needs to redeem himself after killing ross.
Maybe he has a wife who died to a man and he is fighting his way through a factory to kill the man. He finds him. But he sees a family. Either kill the man, or save the family. He sees a chance to redeem himself and he chooses the family. The man is killed by a lantern that is shot by another guy.
Now there could be another game with the Origin of the gang. But it would have to be something like Red Dead Origins or maybe another title.