I hope it is a vast impovement over the last two films...
Both were pretty much unwatchable...
I can see how people think that, especially if they didn't read the book. As it is, I like it if only as a set of illustrations to accompany the book. I can't see anyone making sense of it otherwise. It would be choppy. The casting change just adds to the confusion.
I may alone in this but I liked the first cast better. I liked Taylor Schilling as Dagny. They should've given her black hair, but apart from that I thought she nailed it. Especially the final scene at Wyatt's Torch. Loved that scene. Grant Bowler was a good Rearden. The new cast is fine, but there was nothing wrong with the first ones.