Could have been interesting too to have had Louis play Gabriel and not have Daniel played by a new older actor. Daniel could have been an invalid so he doesn't have any scenes with Barnabas, and no one bothers him with the news of visiting cousins from England. Then they could have had him pass on the secret to Edith from his deathbed. Think what an interesting scene that could have been. They could have chained him up in his coffin again this would have helped prevent the changing of time.This is getting pretty long and confusing, but just wanted to say one more thing, ... and it might also have been interesting if they had Lara Parker play an innocent young woman who just looked like Angelique (and not have had her play Angelique in this time), they have Barnabas fall in love with her.
IMHO, the original timeline had Quentin and Desmand beheaded and shortly after that Gerard killed Daphne, Carrie, Tad, and then himself.They never should have used Edith in 1840, intead her and a third Collins son should have been out of town at the time with their children. Terry Crawford could have played another character married to Gabriel Collins without any children.
[spoiler]The presence of Roxanne in 1970 raises a lot of questions which never really get answered in the series. You brought up several of them. Another one I'd like to add: IF this Roxanne is the same Roxanne from 1840, is Barnabas the one who turned her into a vampire before he actually even knew it in 1970? Weird.... Does anyone know if the writers were planning to play it off that Barnabas WAS the one who turned Roxanne into a vampire all along, even though he hadn't actually experienced those events yet in 1970? That's some weird paradoxical time-travel stuff right there if they were.[/spoiler]