I finished it a coupla days back. While I thought it nowhere near Lonesome Dove in the pantheon of great westerns, I did think it was entertaining, and would say that I enjoyed watching it.
Parts seemed a bit farfetched, like the lead's romance/marriage to the young Indian guy. I think the customs of the day would have kept them well apart, despite him being by far the coolest young man in the series. And her Indian costume seemed pretty risqué for either Indians or cowgirls/pioneer women in that time frame, but hey! It's Hollywood and she was easy on the eyes so no complaints here.
I also thought the acting by the two country music stars, Hill and McGraw, quite credible.
I realized watching Godless some time ago that while I find modern westerns with their modern sensibilities and diversity in opening up traditional western film roles to all a bit... strange..., it is probably a good thing in that everyone in today's America gets to participate in an/the archetypical American foundation myth. (By myth I don't mean it's all false, but it is also, as typically presented, a heroic embellishment of history. Sharing it broadly, allowing everyone to join in it, is surely a good thing for our people as a whole.)