(JMHO, but I think Jane Seymour would make a great Elizabeth!) (Hope no one thinks I'm committing blasphemy -- LOL!)
I love Jane Seymour (have since the first moment I laid eyes on her in Somewhere in Time (I completely identified with Christopher Reeves' character
)). She could make a great Liz. But is she old enough to play Martin Donovan's older sister (presuming Liz is older)?
(Though...a younger sister holding the purse strings and controlling the family could make for some great sibling conflict.)
I really liked AllMyShadows' idea of Frances Fisher as Julia. But now that Alec Newman has been cast as Barn, at 51, she's probably too old to play opposite him.
But I'm sure they'll come up with someone equally as interesting for the role.
As for Joe, I haven't got a clue who might fit the bill...
[spoiler]Wonder if he'll be killed off as quickly as he was in the '91 series - and then possibly the actor will be recast as a Chris Jennings type, as was the plan with Michael T. Weiss?[/spoiler]