Is this how superhero films finally jump the shark?

News came today that Lady Gaga is in talks to join Joaquin Phoenix in a Joker sequel... that is also a musical.

https://ew.com/movies/lady-gaga-harley-quinn-joker-2-joaquin-phoenix/

Are we so thin on material at this point that we have to create superhero musicals now? This is feeling eerily close to The Simpsons' Planet of the Apes musical.

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