Maybe the roughness was part of the charm for me. It gives it more of a reality feel. But also, I guess I am not that critical a reader, I care more for ideas than presentation.
I enjoyed the books for their ideas also. The fact that the presentation is flawed is unfortunately a hindrance that breaks the spell ("oh no, not that trope once again"). On the other hand, some authors are so good at the presentation that their writing also breaks the spell, but for the reason that I want to stop and admire it. The latter is a less hurtful problem of course :)