In Memorium (*SPOILER*)

[Ultear_Milkovich]

This is so sad. I mean wow, SE should have killed another character instead. They chose the cutest and the most defenceless.

Also my character looked so stupid watching her die...

I really need to forget that sad 2.55 ending. Come on bring 3.0 with all the weird beastmen and primals!

[kyuven]

This is so sad. I mean wow, SE should have killed another character instead. They chose the cutest and the most defenceless.

That's precisely WHY they killed her.
Savvy players probably put 2 and 2 together as far back as the speech Raubahn and Nanamo give at the remembrance ceremony:
Merlwyb gives her speech alone, flanked by her attendants.
Kan-E gives her speech alone, flanked by her siblings and attendants.
Both Raubahn and Nanamo give a speech.
This means that, functionally, one of these characters is redundant and is thus being set up for either betrayal, or death.
Combine this with the not-so-subtle hints that the only thing keeping Ul'Dah from turning into a wretched hive of scum and villainy is the Sultana, and she may as well have a target painted on her cute little forehead.