Ya know, I loved the finale, but what was sincerely lacking in it was any sense of real danger... They needed to kill one of the regulars (not Racetrack) very early on in the battle to give the idea that, hey, these guys aren't safe. Didn't necessarily need to be Helo, but it needed to be someone.
The problem is they spent season four killing of three prominent secondary characters (four if you count Zarek): Gaeta, Dualla, and Cally. Season three was spent killing off prominent tertiary characters: Duck, Jammer, and Kat. Out of the main characters, Starbuck was already dead, Roslin was dead by the end of the epiosde, Lee and Bill survived, Six and Baltar survived, and Athena lived/Boomer died.
So, I agree with you, but who would be killed doesn't immediately leap out to me.