Such a fun thread!
Although I am a fan of both Jaclyn Smith and Kate Jackson, I feel that Kate would have made the better Vicki, as her persona is more down-to-earth than Jaclyn's. (BTW, I must take a moment to defend "Charlie's Angels." IMHO, it is one of the all-time great TV series.)
I was also intrigued by Maria Merriweather's suggestions of Mia Farrow and, especially, Geraldine Chaplin. I have long been a fan of GC, thanks to her performances in such films as NASHVILLE and REMEMBER MY NAME. I don't know if I see her as Vicki, but she definitely would have made a strong contribution to DS in any role she played.
<LOL> Now I'm imagining GC in her NASHVILLE role (Opal, the BBC reporter) on DS: "Hello! Mrs. Stoddard? I'm Opal from the BBC! I'm doing a documentary on Collinsport!"
Regards,
John (who, with all due respect to Joan Bennett, still fantasizes about Joan Crawford being cast as La Liz...)