It's a general theme of feudal systems everywhere. In Europe, too, the nobles and knights were ostensibly loyal to their lord -- be it king or Pope or Holy Roman Emperor -- and sworn to defend and uphold them... While every minute that wasn't spent actively doing that was spent jockeying for power, prestige, and position.
I like that they got the eyes right this time around. I was hoping for a bit more... I dunno, detail of any kind for the Atreides uniforms. The stillsuits look like an unfortunate blend between Lynch and Sci-Fi interpretations. I do not like all the hangy-off and sticky-out bits that will get caught on things and catch sand like nobody's business. I do not like the very contemporary motocross knuckle guards, especially used as wrist protection (where I don't think there are any knuckles...), I had hoped the "turban" portions that I'd seen people describe were the hoods over the stillsuits' conformal head-cover, but they seem to be the head-covering itself. One thing I keep hoping for and that no one has done right. The only things that should be not covered by a stillsuit, which itself should be as sleek and body-hugging as a slightly bulky second skin, are the eyes and fingers. And then the desert cloak and other accessories over that. At least the ornithopters look better...