It was a pretty good effort! I think I caught one major continuity flub, though, but it's such a minor thing...<br/><br/>(Spice harvesting on Arrakis has been going on a long, long time.  It didn't start with the Harkonnen. They took over from House Richese.  Who knows who had it before them...)<br/><br/>It would not be unusual for different Houses to have different looks in some regards: livery differs, at the least, and while the original books don't ever touch on this idea, I would find it surprising if the Houses of the Landsraad did not have something like sumptuary laws to go with the caste system.