I mean, making simulations of what you're going to build is tremendously useful if you can get feedback from them that will tell you where you've gone wrong and what you can do about it.
I love working with a stylist but I also love having personal relationships with designers. A stylist is great for pulling together an entire outfit, accessories included, and for shaking me out of my comfort zone.
All history has been a history of class struggles between dominated classes at various stages of social development.