I thought that slap from Diane was ironic because Diane had thrown Alicia under the bus on more than one occasion and used Alicia for her own purposes on numerous occasions. In a way, Alicia has chased ghosts as long as we’ve known her. Her former life. Her marriage. Her old relationship with Will and current one (quite literally a ghost). Seeing Jason’s shadow and going after him.
One of the least Alicia-like relationships she has is with Zack. Their estrangement seemed too abrupt and unexplained. And I wish we had had more time with Lucca. I didn’t like how she was mired down and became an afterthought. And Marissa. Wanted to find out more about Marissa but she seemed to go away abruptly too.