So, them Allagans... (possible spoilers)

[Fenral]

I wish they'd add Desch and Salina, but if Desch and Salina had anything to do with Graha it'd be more likely Salina was the miqote and Desch the noble.

The last quest in the CT chain gave us the name "Princess Salina" as pretty much the only justification for G'raha's actions. Going by Yoshida's comments before 2.5 hit, the logic was "G'raha == Desch, therefore he must sacrifice himself because that's what Desch did in FFIII, regardless of his own existing character logic". Wish I were kidding.

Technically, Salina is the last Allagan Princess and G'raha is "Desch," but I've been using "Desch" for his anonymous ancestor who received the blood (and memories) from Salina. They were simultaneously trying to replay Desch's long hibernation in the Tower of Owen and his amnesia/destiny bit that ended with him throwing himself into the reactor. It's messy, to say the least.

Only bit of hope I have left on that is that Desch (in FFIII) wasn't gone forever after the Tower of Owen event: he came back to save the Warriors when they needed him most and all seemed lost. Hasn't happened yet, though, even though Azys Lla seems like the perfect excuse.