Since Stabbey has his topic, I'll make mine.
1: Who, exactly, came up with the whole "reversed Soul Forge means Ygerna's life will be Damian's death" plan, anyways? Zandalor randomly approaches you about it, but who actually concocted it? If Zandalor himself formulated it, is he just horrible at strategizing and such, or was he given some lead (possibly as trickery from Ygerna herself) to lead him to that conclusion?
2: If Damian was unaware of your plan to resurrect Ygerna, and he thought you were trying to destroy her soul, why didn't he try more fervently to stop you? He sees you a few times, sending some (what I can only imagine he knew would be slaughtered) Black Ring captains after you. If he was so fearful of you destroying his love, why wouldn't be try and stop you himself? I know he's pulling the usual "villain lets the hero go even though he could crush the hero with little effort" bit, but it makes a little less sense, especially considering he was apparently seeking to revive Ygerna himself.
The only thing I can think of to explain it is he wanted you to fetch the components needed to access the Hall of Echoes, but the biggest hurdle (the Patriarch) is accomplished when he ambushes you in the Primordial Cave after the Hall of Echoes is opened. Ba'al, a demon general of his, has the sigil. With your death would come the Battle Tower, and thus the spell. Zandalor in Aleroth has the Shield, but as we see in FoV, Aleroth is hardly in the best position to be resisitng attempts to claim the shield.
3: I think I've asked this before, but I've had a hard time finding it if so. How long ago was the Divine "killed" by the corrupted Dragon Knight, thus creating the Slayers? It doesn't seem like an incredibly long time, based on what people say in the game, but it's long enough for Arben to have risen to prominence, had a long, successful campaign, retired, and died of old age, as well as people like Rhode and Marius to have grown up fully indoctrinated by the Slayers' creed. I'm guessing 50 years, since it seems a lot of more prominent and powerful people in the world live longer than normal lives.
But the problem with 50 is the people in Dragon Cliff Castle. Unless they're all much more ancient than they look, or they were all kids during Arben's attack of Orobas, it wouldn't make sense. Well, them being children then, with all the older people killed in the attack (or died off from age) actually would.