Should the DE win and take over Ulthuan, what would happen?

Now, as far as I know, only Malekith and Morathi have properly lived on Ulthuan, whereas the rest of the population was born in Naggaroth.

Naggaroth is a harsh place in many ways, just like the DE. It has become a part of their culture. They see themselves strong, living in the barren North, whereas the elves of Ulthuan are soft and weak.

So, would they just turn Ulthuan into another Naggaroth, or would they appreciate its natural beauty? Would they tear down the white galleries and palaces and build barbed fortresses and torture chambers in their place?

Also, would they keep the remaining Asur as a slave caste or would they permit the birth of a new generation of HE?

What do you think?