Quote Originally Posted by Mistyregions View Post
I am speculating that we figure out where dragons came from due to NeiR I also speculate he will be involved with bringing everyone back seeing he has the ability to pierce into the *inbetween* of dimensions. If I was gonna throw stuff at the wall and see what stuck I also presume Tiamat will be involved somehow.
This was covered in the Omega raids. We saw the dragons' homeworld (if briefly) in the fight with Midgardsormr, and it also established that his present-day self used up too much aetherial energy saving us from Omega, and will be resting for what is likely to be more than a human lifespan. He sent Hraesvelgr to help us, but it seems he won't be back in the plot himself any time soon.

Tiamat is certainly a plot point in waiting for something, though.