I expect we will get a satisfying conclusion to the story of the characters.
Most of it has been set up already. The plot itself? Not so much.
I expect these characters will get their dues:
- Adama (Nearly there - it’s a very short jump.)
- Roslyn. (Will die. Vindicated in her earlier beliefs, probably.)
- Starbuck. (The time remaining is too short for any character-changing arc, so it will probably be something that is key for all humans, not just herself. A forerunner of some sort.)
- Gaius Baltar. (Vindication or an ignominous and thoroughly deserved, gruesome ending? It’s an open question.)
- Cavil. (As the villain, he’s done for.)
- Galactica herself. (Out in a blaze of glory, going by the set-up.
The supporting characters will probably get sacrifiecd to facilitate the changes for the main characters or the plot.
- Helo and Athena will most probably lose Hera. (As they knew her, at least.)
- Tigh. (Tied to Adama and Galactica. Probably goes down with the Captain.)
- Ellen, Tyrol, Tory & Sam. (At this point they’re inconsequential bystanders.)
- Baltar’s harem. (Vindicated or foppish fools? Open question.)
- The Quorum. (Vindicated or idealistic morons? Open question.)
- The fleet. (Landed, stranded or destroyed? Open question.)
- Lee Adama (Open question.)
Battlestar Galactica has always been about the characters, not the plotline. It has been refreshing to watch a show that tells an exciting story arch as a vehicle for great actors to refine and master their characters. But it is also time it ended. Adama’s closeted grief is getting very played out. Starbuck’s temper at herself and the world is getting old.
Lee Adama’s “trying to do the [USA] Right Thing[tm]” schtick is getting obnoxious. (Well, more so.) Tigh’s love for the Old Man is getting fairly one dimensional. Roslyn’s dying, disenchanted leader act can’t go much further. And Cavil’s set himself up nicely to get a Battlestar-shaped object shoved up his arse.
To be honest, I think Baltar’s the only really undecided (and therefore exciting) character left in the cast. Chaotic neutral, as someone upthread called him, is a very nice summary. IMHO, it would be perfect to see the last throes of the plot through his eyes. And see where he lands. He’s also a very obvious Judas character.)
My own wild theory, based on nothing but a hunch, is that the following characters will die during the finale:
Adama, Helo, Athena, Tyrol, Sam, Starbuck, Caprica, Baltar, Lee, Tigh, D’Anna and Roslyn.
I think D’Anna will be central to the finale. She may have been the mastermind behind Cavil again. She may even have been the connection between Starbuck and That Other Force.