Exactly, which is why I'm saying, Empire's bad because of authoritarism, not because of nationalizing. Anyway, in spite of how in favour or against common property we may be, I think the more you establish about the Empire, the more you PTize the original trilogy plot.
OT is a fairytale because the plot is simple. The Empire is evil because it's evil.
Remember the feeling of ObiWan screaming "my allegiance is to the republic, to democracy"?? Well, I think it'd be a rough call to bring that same feeling to the OT.