Saint Laurent took inspiration from the streets.. if L.A. is as seedy as it is being described in this thread, perhaps Slimane is using it to create that darker side of luxury that Saint Laurent was inspired by.
LA has a seedy side, every major city in the world has a seedy side, my thing is that, going by my observation, and admittedly I don't live there,
AND Slimane's own photography, it is the same old, obvious stuff that has been going on in some form in LA and many other cities for generations: shaggy hair, tattoos, blank stares, hunched posture, hair dyed black or platinum blonde, dangling cigarette, color palette dominated by black, and so forth.
To be sure, globalization and the internet make it so that it is easy to have your pulse on the goings on at headquarters half-way around the globe, and any other places of interest and inspiration, so really it is not a big deal other than the irony of a European transplant, who made the following comment, "
nothing looks worse than a dress or a suit on a red carpet. It is an ongoing tragedy of cheap fashion on cheap celebrities, followed by ubercheap comments. I only like designers’ clothes on models. Good models have an inner understanding of the clothes and design," living in Mecca for celebrities and red carpet events, and going to work for a conglomerate headed by a man married to a glamorous movie star whose job these days is to show up to events wearing creations by the various design houses he owns.
Anyhoo judging by the guy's history, Slimane will not likely be at YSL for more than five years, and he has not designed in a number of years, however, as a fashion photographer, he has remained part of the industry and likely done a lot of traveling. I would not be surprised if he does not already have an overflowing inspiration or sketch book that he will be tapping into for his first few collections for YSL, and of course the YSL archives are also available to him. I think that given his stance on the celebrities and red carpet dressing, his being based out of LA is worthy of a mocking comment or two - can't wait to see bodacious Salma wearing one of his creations, but that does not necessarily mean that I am predicting Slimane's doom as it relates to him being the CD of YSL.