Uncle Roger:
I'm glad you like some of those choices. Of course, casting isn't something the writer has a lot of involvement in, unless they're a multi-hyphenate, in which case they call all the shots. We only kept these actors in mind while we were writing, so we had clear pictures in our minds of what they looked like. By the late-80s, Pamela Sue Martin had run her course as a difficult actress. If a forgiving producer was willing, she would have landed new work. Had we actually been casting, I imagine our meeting would have included, "You messed things up pretty bad a few years ago... Have you got all that out of your system now? Are you going to do the same thing to me and my show? If not, go on, get out of here and go talk to Wardrobe to see what they think "Susan" will be wearing." Lol.
I was giving thought to the Part 2 of your question, re: contemporary actors filling new character roles in the Darker Shadows storyline, and I realized it's moot. Darker Shadows (original title "Return to Collinwood") was developed and created with the intention of bnringing back together at least 11 of the original series actors, along with the new characters/actors. The time for that is long passed. Back in 1987-88, many of those actors were still alive, or still yoiung enough to make the casting choices realistic. Now, we would either have to extensively re-write the thing in order to include only those original actors still with us. Frankly, though, I felt it was a pointless exercise, so I switched gears...
In my thoughts, I created the scenario of, "Dark Shadows has just come across my desk, and I'm the new casting director." As much as I hate the idea, I went ahead and assumed the new series was developed under Dan Curtis and, therefore, starts at the retelling of the Barnabas story all over again, with the Victoria Winters story also thrown in. Attached you'll see my "contemporary" casting choices for that fictional series, if it were launching and if it landed in my hands.
A couple of notes -- if this were a decade ago, I'd be advocating for Benedict Cumberbatch to play Barnabas. As it is right now, I think he's crossed the threshhold into "too old" territory. I'm thinking like a producer right now. Think about it. If he hired on now and the series ran for an entire decade, he'd be in his 60s. It would be the "Data Dilemma" all over again, where actor Brent Spiner now looks too old (and too fat) to play Data on Star Trek, yet they went and did it anyway in the Picard series. Totally did not work for me on a strictly visual basis. And please don't laugh at some of my other choices, like Molly Ringwald to play Julia Hoffman. She's in her 50s now, and she has that beautiful red hair, and she's proven to be a dynamite actress at this age with the productions she's been in. The right styling, and she's the perfect Julia... just as Helena Bonham-Carter was the perfect Julia in the Burton-Depp film. And don't you dare laugh at Mark Hamill as Prof. Stokes -- it's the perfect role to attract him to the show, complete with an excess of eccentricities to give him plenty to work with in his scenes. Hahahahahahahaha.
Again, please overlook any blatant typos or grammar errors. Fingers work faster than brain, and brain doesn't see the errors, so I just send things as-is anymore.
Have fun! Looking forward to your response.
syoung.