I doubted I'd ever see the show again
It's ironic that the two main projects JF went on to do in the next couple of years were occult themed. In that 1973 interview in a monster movie magazine he spoke of wanting to do a film with Jeanne Moreau. That would have been fascinating to see.
I think Frid made a mistake in that asking DC to eliminate the character of Barnabas from the series. Instead, he should have fought to keep Barnabas away from the "vampire bit" and try to develop the character in different ways. Perhaps he was too close to the series to understand the appeal of the character, why it was essential.
Caroll O'Connor was an accomplished actor who played many different roles over the years, but he didn't say "Let me play a different role on 'All in the Family' than Archie, please."