I love Rachel Brosnahan in this, but that is the obvious pick.
Alex Borstein continues to be great as well, at least her storyline in the first episode is fun, if not deeply terrifying.
Tony Schaloub might be the secret MVP though, I love it when family characters are written in a way that you can tell they are family. Tony plays Midge’s father with a touch of that zany energy, just like she has. Also, Marin Hinkle, as Midge’s mom, Rose, was quietly great last season as well. And, the plot of the first episode centers quite a bit around her, and it is fun seeing her out of the apartment.
I typically don’t binge shows, because I can’t watch one thing for an extended period of time, i like to watch shows like this over a week or so, gives you time to think about each episode individually. So no advice from me there.