One thing I find really intriguing about the series is that there's a lot of backstory to the Roy family we don;t know--the characters will refer obliquely to things in the family history, but they've left much yet unclear. for example:
1) Connor's mother, Logan's first wife, has never been named. She seems to have spent some time in a mental hospital, but we don't know if she's still alive or dead, and if she's dead, whether she died while still married to Logan.
2) Logan and Ewan had a sister in Scotland named Rose, and we are told the Roy children know never to bring her up in conversation with their father because he has always blamed himself for her death. What happened?
3) Ewan and Logan grew up very poor in Scotland, and were sent to Quebec as children to be raised by their aunt and abusive uncle. At some point the brothers had a big quarrel, but we don't know over what. Ewan is now very wealthy, but not nearly as wealthy as Logan. Did they go in business together? What did they fight over?
3) Connor has no interest in running Waystar Royco, unlike his three half-siblings, and seems to stqy out entirely of the cometition to succeed his father as its CEO. Why? Is it just because he's more interested in politics?
4). No one in the family or at Waystar seems to know what the backstory is of Marcia, Logan's Lebanese third wife, who seems to have sprung up form nowhere in her thirties. We do know she used to work in publishing and that she has a son named Amir from a previous marriage, but we know nothing else. (The series pretty much forgot about her last season, although she did separate from Logan when she discovered he was carrying on an affair with Rhea Jarrell.)
5) Lady Caroline Collingwood, Logan's second wife, hates him and wants to make his life miserable. She is very distant from all three of their children together, Kendall, Shiv, and Roman. Why did they break up? Why did she have three children with him if she is so uninterested in them?
I don't know that we'll necessarily find the answers to any of these questions this season, or any other season, or if we even should--it's kind of interesting that it's like real life, where a family will make reference to their dark secrets but never fully explain them to outsiders.