If only Hydrus was still alive...
For a moment when i saw the first ShB trailer, "the history must be unwritten" part reminded me of him, i thought we would have to somehow bring him back in hopes of preventing or ultimately defeat Varis or prevent the Black Rose as he was his true friend and probably his death had something to do with him falling into madness. Also would have developed unukalhai more.

Azys Lla is in a time bubble right now, those imperials don't even know what's happening in the capital probably.