1897 shows Barnabas much less as a hero then as someone on an ego trip at times.
It strikes me odd as to why he should care, given that his main force and drive in life is to be with Josette. I do understand the will to preserve a family name, but when Barnabas first came on the scene, his main concern was to find his bride.
I think BC was new at trying to solve people's problems rather than creating them, and Barnabas of 1897 was struggling with trying to stay reformed and do the family some good, while being pulled toward darkness by the curse again. I think being a vampire was so overwhelming that he didn't know it was affecting his judgment. This is actually my favorite time for the character. And yes, he may have done more harm than good. He wasn't necessarily the right person for this job....
Whatever Barnabas and Quentin did, they had to figure out how to bring them back. If Qunentin hadn't been such a big hit, would they have had the picture, as in picture of Dorian Grey. Barnabas would have resolved Quentin's problem and there wouldn't have been a problem. There were certain stars that didn't stay on the show.
They could have brought David Selby back in 1969 with a blond plastic wig and named him Cassander.