There WERE some great Julia moments in 1840, but the fact that Grayson was away for nearly a full month didn't help the later storyline. I really liked Grayson's work as Aunt Julia Collins in 1841 Parallel Time... I think I am in a minority here, but her scenes really rock that storyline for me, and she was in it consistently and a lot.
I liked the initial characterizations of both Gerard and Flora. With Gerard, I found him a lot less interesting after a certain plot development. Flora started out as a frivolous, gushing novelist, but after awhile for some reason just became the latest iteration of the standard Joan Bennett matriarch, but without the edge we got to see in Liz, Naomi and Judith.
The 1970 mysteries WEREN'T resolved in what was shown of 1840. We never knew just why this particular quartet of ghosts was haunting the ruined Great House in 1995, nor what special role Tad and Carrie were meant to play. I thought there was a hint of a nasty sexual edge in Gerard's interest in David in 1970, somewhat reminiscent of the Quint character's implied paedophilia in the original Turn of the Screw novella. The fact that David Henesy left the show during 1840 meant obviously that nothing could be done with the Tad storyline. I've always wondered whether Tad grew up to be the Thaddeus who died in the Civil War.
I don't think the Java Queen was even mentioned in the 1840 scripts.
G.