Firstly, I'd like to thank the Devs, you guys have spun together a story that, for the first time, had me scared to progress but I did, so I'll share what I think.
Everyone seemed to feel that all the Scions had died. While it is possible, I kinda doubt it. Yda and Papalymo seemed to wipe out their attackers and more than likely were "arrested like the others" after, Y'shtola seemed to be pretty well after casting what I will refer to as Almagest for now, and Thancred expected to die in a blaze of glory and...(*facepalms*) took an arrow to the knee. I doubt Minfilia would've went back only to find the broken corpses of her friends; Thancred is injured and Y'shtola is probably exhausted from that spell, I feel they will be "arrested like the others" and Minfilia has no intent on not being with them, Hydaelyn spoke to her but we don't know what she said, I highly doubt it was "Go die." People are blaming Tataru and Momodi. Momodi probably assumed the flask was Alienne's and you should keep it to return to her. Tataru, if she were present, is about as important as a nameless Crystal Brave; whatever Teledji and Lolorito were planning, they'd have no reason to spare her.
Nanamo; dead. Raubahn is obviously alive but missing his arm. I see this going three ways, the least likely is he remains in prison and fades into obscurity. The more likely is that he will either be executed or he will be freed and possibly given a magitek arm as a few others have guessed. Ilbard; never trusted him, I hope the Fragrant Chamber is slathered in his blood. Urianger; he seemed to answer the summons as an emissary just as Elidibus appeared in the Waking Sands, I don't think he's a traitor. Teledji; AHAHAHAHA!! I cheered! Lolorito and Teledji; I get the feeling these two were planning to rule Ul'dah, and they weren't planning on Teledji's death, Lolorito finds himself in a bit of a predicament now.
Finally, something I noticed; your character has a glass of wine too that they never touch. I got the feeling that the player was also a target for poisoning and were to be framed for a murder-suicide rather than a murder.
That's my take on it.