Young, attractive, mostly British people doing tons of coke and having sex. The main actress is interesting and well-played, but the show is so mired in the social depravity of young people in finance that the interesting plot lines get buried. I binged the season because I'm bored, but I fast-forwarded through more and more as the season went on.
TL:DR: writers need more ideas so they don't have to fill up the shows with bacchanalia, and they need to make the 3 tall blonde british men with identical hairstyles, clothing and personalities distinguishable from one another.