One thing I thought about today that kindda made me sad was...
Hythlodaeus is still walking around the recreation of Amaurot. And even though it's not really him, he seems self aware and therefore sentient in a way. And now that Emet is gone he will be forced to walk through the shadows of the magics that make up the place and the ghosts of his people mindlessly repeating their day to day, until the time comes when it, and he, slowly fades away. That is a hell of a sad thought to think he is condemned to such a fate.