the only thing i could think of is a big screen version of the 1795 storyline. Which acutally would have been a great companion piece to HODS.
I've also assumed the Barnabas sequel would have been a flashback to when he became a vampire - though, of course, we know how dangerous it is to assume.
Also, I've often wondered if the Barnabas backstory was somewhat different for the film than it was for the daytime show. When Barnabas explains a bit of it to Willie, he says, "but when
they put this curse upon me..." That could have simply been Frid putting the dialogue into his own words because, as scripted, it should have been, "but when this curse was put upon me..." But at times dialogue in both films was actually changed just prior to shooting. And if that was the case there, it is interesting to wonder who the "they" were.
I would loved to have seen the 1897 storyline as a movie. shame it was never done and it wasn't done for the revival series.
The '91 Series had planned it for its second season. To get into that here would be way OT, but there are probably at least a couple topics on the forum that get into what the plans were had the show continued...