Nancy, I have an interview with Anthony George in the July/August 1995 issue of The TV Collector in which he stated that he hating doing Dark Shadows. Another bone of contention with George was that he wanted to direct and Dan would not have that.
I started digging around in a couple of boxes and found the issue. If you want a copy of the interview, please email me.
I also enjoyed Tony George's work on DS, particularly some of his scenes with Frid--the two played off one another really well, I thought.
I have to confess, however, that once I got to see Mitchell Ryan in the part (this was much later on--I first saw Tony's episodes in the 1976 syndication of the '67 stories), I felt he "inhabited" the role much more believably, for whatever reason.
Apparently about a year or two after the show went off the air, Joan Bennett was on a talk show somewhere and also said she had not enjoyed working on the show. The only reference I know of to this particular interview is on the Grayson Hall interview tape from March '73 where the girls are discussing various people who had worked on the show with GH. GH response is characteristic: "You gotta remember--she's an old lady!" and she added that she thought that Joan had enjoyed a lot about being on the series.
I also enjoyed Tony George's work on DS
Having read a good deal of official and unofficial Dark Shadows history over the years, I have a short answer to why Burke was written out--Dan Curtis made up his mind that Burke had to go, and he went! Anthony George probably asked for a raise, a surefire way to get Dan to give you the boot back in those "good old days."The writers would protest that storylines and audience expectations were being disrupted, and Dan would narrow his eyes, angle his golf club, and ask "are you writing the show, or not? I can get other people to write the show if you don't want to do it."
I actually enjoyed his work as well, but as Jeremiah. I think his more gentle approach worked better than if Mitch Ryan had done the part, making the character of Jeremiah more sympathetic and what happened between him and Barnabas more tragic.
I lean towards believing it was not so much the show itself the disgruntled performers disliked as much as it was the set. By chance, I wound up taking a class taught by DS director Peter Miner and he told me how horrible it was working on the DS production because the demands were unrealistic (demands by the Executive Producer), the pace was crazy and things were chaotic to the point it was difficult to work. He made a point of saying that Frid and the other actors were a pretty good bunch to work with and it was the production end of the show that was more or less a miserable experience.