Barnabas should have bitten Daphne. She's a sweet young thing, so it would have been pleasure as well as business for him. Julia would have scolded him to high heaven, but since when has that consideration ever stopped Barnabas?
And Desmond should burn that Head, but I suppose if he does it will just come back anyway. That's how such things work on Dark Shadows, until the writers decide it's time to move on.
I liked Barnabas's and Julia's conversation: all the jigsaw puzzle pieces are here, and now the drama begins. They didn't accomplish anything in 1995, they couldn't stop anything from happening in 1970, and now they expect to do better in 1840. Such optimism!