I absolutely Love this show. The depth is unbelievable. Glad for this thread too!
I saw this episode to reflect masks of insecurity. How we see ourselves and what we think we let everyone else see. It seems Don is realising how he really looks to everyone vs his truth whilst the office is the opposite. The office is a mess without his image cleaning and carefulness. The man needs to regain his composure, Don Draper with roaches, he is on his way back up!
Example,
Don and his fake work routine e.g when Dawn came and she reminded him she didn't want to copy those files.
Pete and his 'invisibilty'. Peggy being behind on everything, e.g her placement on screen even. Ginsburgh will overtake her. Shirley and Dawn, being shuffled and seen only as the black one.
Sally giving Don a real smile ( great acting). Cooper and his fake ass intelluctiual Aryn Rand reading racist self.
Finally Lou Avery top dikk who only sees himself.