I can see Carolyn taking over the feet and cannery before I see her becoming a parapsychologist. Her only interest in the "other world" seemed confined to unwittingly dating its denizens. She also seems to have become more serious and grown up as the series went on, and I could definitely see her running things. I imagine her running the business with an assist from David. Actually, David seems more likely to go the parapsychologist route, considering his propensity for coming into contact with the supernatural. I think Jamison Selby was on the right track with turning the character into an archaeologist. I see him becoming more of a Mulder (X-Files) type, retaining a somewhat child-like curiosity and fascination with the mysterious. I see a Liz and Roger situation - like Liz, Carolyn would run things and like Roger, David would sort of help out.