Imagine Penny Marshall as a Charlie's Angel...
This sort of thing was influenced by the "Head and Shoulders" from c. 1970, with Penny and Farrah Fawcett and Penny of course playing a policewoman herself later on in a film or something like that...
Now, admittedly, Penny Marshall would have been a real bad ass policewoman for sure (given she's no lightweight herself, based on her performance from the first few Battle Of The Network Stars during 1976-77).
Only major downside would have been that the iconic Farrah poster would not exist at all, since Penny wouldn't be able to pull out that Farrah look.
Could have you imagined Penny Marshall as a Charlie's Angel?