How do you think the show would have integrated Pam with the later years cast. Perhaps Mac would have been revealed as Pam's bio father. Check out Pam and Mac in 74 in my attached file lol. That could have added another angle to Mac's importance to the show. I could see Pam and Cally being very close. She probably would have helped Cally break free of her love spell for J.R. Would Pam have been Sheila Foley's casualty in Paris?