Here's a potential cast for the actors in Better Call Saul in a musical production of Gypsy:
Jimmy McGill/Saul Goodman - Bob Odenkirk as Herbie
Kim Wexler - Rhea Seehorn as Rose
Mike Ehrmantraut - Jonathan Banks as Pop
Chuck McGill - Michael McKean as Uncle Jocko
Howard Hamlin - Patrick Fabian as Tulsa
Nacho Varga - Michael Mando as Yonkers
Lalo Salamanca - Tony Dalton as Jocko Jr.
Gus Fring - Giancarlo Esposito as Mr. Goldstone
Kim's former boss, Rich Schweikart - Dennis Boutsikaris as Cigar
Jimmy's former cellmate, Huell Babineaux - Lavell Crawford as Tessie Tura
Kim's Mesa Verde colleague, Paige Novick - Cara Pifko as Mazeppa
Jimmy's former assistant, Francesca Liddy - Tina Parker as Electra
Jimmy's former law school classmate, Kim's friend, and fellow attorney, Rebecca Bois - Ann Cusack as Miss Cratchitt
In this cast, we see Bob Odenkirk as Herbie, the long-suffering agent and love interest of Rose, who is played by Rhea Seehorn. Jonathan Banks, who plays Mike Ehrmantraut, takes on the role of Pop, one of the three burlesque strippers who teach Rose's daughter to dance. Michael McKean, who plays Chuck McGill, is cast as Uncle Jocko, the owner of the Kiddie Troupe. Patrick Fabian, who plays Howard Hamlin, takes on the role of Tulsa, a dancer who falls for Louise, Rose's daughter.
Michael Mando, who plays Nacho Varga, is cast as Yonkers, another of the burlesque strippers. Tony Dalton, who plays Lalo Salamanca, takes on the role of Jocko Jr., Uncle Jocko's nephew. Giancarlo Esposito, who plays Gus Fring, is cast as Mr. Goldstone, the agent who books the burlesque show. Dennis Boutsikaris, who plays Kim's former boss Rich Schweikart, is cast as Cigar, a producer who hires the strippers.
Lavell Crawford, who plays Jimmy's former cellmate Huell Babineaux, is cast as Tessie Tura, one of the burlesque strippers. Cara Pifko, who plays Kim's Mesa Verde colleague Paige Novick, takes on the role of Mazeppa, another of the strippers. Tina Parker, who plays Jimmy's former assistant Francesca Liddy, is cast as Electra, the third stripper. Finally, Ann Cusack, who plays Jimmy's former law school classmate Rebecca Bois, is cast as Miss Cratchitt, a dance instructor.
Overall, this cast would bring a unique and diverse range of talents to a production of Gypsy, infusing the classic musical with a fresh energy and perspective.