They are coming soon...

Highly doubtful the instructors died. I have seen that plot line too many times. That is to say I would be HIGHLY amused if an important character dies in this game. I dont even think the Dark Mage will die, just purged of his dark side.

They killed off Vita, and Beryl is implied to be killed for being "defective". (Or at least that's what the final conversation between her and Xenon hints at.)

Resistance storylines involve people getting killed.

.....The bad guys on the other hand, seem to be immune to death. Even Magnus is said to still be alive even though his death animation makes it look like he was killed.