I finally got around to watching this last night. I consider myself a big Scorcese fan, but I thought that this one missed the mark. The ending really ruined it for me, although I get what he was trying to do. It reminded me of the propaganda bits from Starship Troopers. A lot of people hated that, but I thought Verhoeven executed it perfectly, much better than Scorcese did here. I think Scorcese would have been better served to make amends for the treatment of this story in the past by sticking to a solemn and serious retelling of the events through to the end, and respecting the horror and tragedy that the Osage lived through.
I thought Dicaprio, Deniro, and Gladstone were all fantastic. Actually all of the actors playing the sisters and the mother were pretty great. Although Deniro was once again just playing kind of a cartoon-villain version of himself, it seemed like the part was written for him to do just that and if so, he and the writer both nailed it. Using non-actors in many of the supporting roles worked well and lent authenticity more often than not, but there were several important scenes where the Osage actors came off stilted and awkward, and as weird as it sounds, anachronistic. They kind of took me out of the movie a few times. The worst in that regard was actually not a non-actor, but Brendan Fraser. His scenes were ridiculous, he just did not fit the period, vibe, or character at all. They could have put Keanu or Jackie Chan or an actual clown in that role and gotten the same or better result.
I wasn't sure what to expect from Isbell, and some of the press around it had me expecting he would play a bigger part than just the 3-4 scenes he was in. He did a good job, as did Sturgill, but I didn't see anything that dissuades me from the notion that they should both stick to their day jobs. I'd still pay good money to see Isbell's arc as the new musical director for Gemstone Ministries, though.