1. After last week, I was excited to see Saul during the heights of BB, with him wheeling and dealing on the side as Walt and Jessie cooked meth.
When we opened to a black and white screen, I was disappointed that we were getting Gene but that disappointment lasted about a minute until we learned about Nippy and saw Slippin' Gene.
2. From the opening scene of s1e1, we were promised a storyline of Gene in Saul's post BB life. Episodes featuring Gene were inevitable.
3. Inherently, Gene's story would not feature any of the characters who were in hiding or killed off during BB or BCS.
No Walt, Jessie, Mike, or Gus. No Chuck, Howard, Nacho, or Lalo. Small chance of Badger, Skinny Pete, Cliff Main or Kevin Wachtell. Decent chance of Kim.
Low likelihood of cartel and drugs. Decent likelihood of conman shenanigans.
Gene's story would be a smaller story on a smaller scale.
4. Last night's episodes wrapped up the previous Gene plot (taxi driver blackmail), introduced both the arc (Gene reverting back to Saul) and the character stakes (Gene being alone in life and having no one).
Gene's confession to distract mall cop Gerry was more heartfelt than intended. He choked up when mentioning how his brother was dead and that if he died, no one would notice. I expect this does end with some reunification with Kim, or a missed possibility thereof.