The announcement of a new spinoff of Young Sheldon focusing on Georgie and Mandy will further contribute to a concerning trend in The Big Bang Theory universe. Initially, Young Sheldon season 7 was intended to conclude the Coopers' story after Sheldon's experiences in Texas and his subsequent move to California. 

However, a spinoff centered on Georgie and Mandy's journey through marriage and parenthood has been announced, ensuring the continuation of The Big Bang Theory franchise. While details about the spinoff are limited, it is expected to be closely related to its parent show. 

Although Missy made an impression during rare appearances in Pasadena, her character potential was never fully realized.

The current season of Young Sheldon attempts to rectify this, although it may not be able to fully explore Missy's development due to limited time. The focus on Georgie's spinoff once again excludes Missy, who could have been a major part of the show alongside her brother.

 Regardless, Mandy and Baby Cece, and their connections to Sheldon's family, will likely be vital to the spinoff's narrative. Missy may make appearances, but as a supporting character, limiting the opportunities for her story.

 Overall, Young Sheldon and its new spinoff shed light on Sheldon Cooper's upbringing and the world he grew up in.