Erlich is worth 25 million $ if he sells his share of pied piper.

This ending mirrored the big moment of last season. Check sabotaged Jimmy's career in first season and his betrayal broke Jimmy. He told the truth only when he was confronted.

I love the duality between Jimmy and Mike's stories. Jimmy's story progresses almost exclusively through words while Mike's story is almost silent. In retrospect, this enhances Walt's character about how he could use both ways and manage such combative personalities around him.

I guess Mimsy will undo Nathan and PCP's efforts and PCP will end up calling him 'retarded' and upon realizing this, would exile himself in shame.

Interestingly, Cartman's schizophrenic relationship with Cupid Me is a trope from anime where the loner protagonist talks with a mystical being which is a metaphor for his ego.
The scene where Cartman is talking to a bar stool is common in anime featuring loner protagonists and him getting fucked by Cupid Me in the end…