Reading these spell descriptions, suddenly I have a sinking feeling they had a reason for choosing 200 years as the exact amount of time Astarion has been undead. :O What if we have to somehow resurrect him as a normal living elf but can't because he's technically been dead/undead just that little bit too long? Aaaaaagh! (Theorycrafting angst is the worst.)
Perhaps you should turn your theorycrafting loose upon
the possible uses of The Necromancy of Thay.
I think it's going to be very relevant to the problem you mention above. But that's just my own theory.
