I saw this movie today. I thought it was decent and deserves to be doing better at the box office than its receipts show. I've only seen part of the original Conan film, with Arnold, so I can't fully compare them. Though I can say that Arnold's film felt a bit more epic, with a larger scope. In the new film you get place names and a couple nice shots, but rarely do they feel either inhabited or really desolate like what I got from the original.
I thought Momoa was fine as Conan. I also liked Rose McGowan. Most of the reviews I read from the critics all seemed to slam her, but I think she and Momoa were the only ones who seemed to really being having fun. McGowan's witch had a great look and was sufficiently creepy. I wish she had been the main villain.
I generally like Rachel Nichols but I didn't get much chemistry between her and Momoa. I was disappointed with Stephen Lang. I liked him in Avatar, but really liked his brief role in Public Enemies-perhaps my favorite part of that film. I was expecting more out of him, but he didn't bring much besides some physicality to a pretty already cliched, generic role. Besides seeing Ron Perleman again, I wasn't raving about him being Conan's father. His acting was adequate to the task, but nothing special. I wonder if maybe they should've had him as the evil king, or got someone like Mark Strong or Clancy Brown. I wouldn't have minded Djimon Hounsou starring as Thulsa Doom, since there is already a comic book miniseries using his likeness, and there was talk about him starring as Doom in a film once. Maybe even Karl Urban, (the director did Pathfinder after all, with Brown and Urban).
The new film seemed to have a tighter plot than the old one, which meandered a bit, from what I saw. However the meandering was done IMO to show Conan's development. We didn't get much development in the new film. They skipped over most of that after Lang's raid on Conan's village.
I thought the action was pretty good, hardcore at spots. I think the film needed a bit more humor. Also I wish the film had used more creatures. The sand people were pretty cool and the tentacled thing was alright, but I wish there had been more.
I must admit that I got a little bored as I watched the film, and the ending didn't do much for me. I was hoping that once Lang put on the crown it would transform him like Skeletor in the Masters of the Universe movie or Deacon Frost in Blade. But it didn't do much of anything. And the one power it seemed to possess, the ability to bring his wife back, he waited forever to get that one going. I also didn't care for the starro design. It was perhaps the ugliest crown in cinematic history.
I hope Conan's failure doesn't ruin Momoa's big screen career. It's failure isn't his fault.