So where's the Draenor Refugees?

We saw the Ogron coming with the Mag'har Orcs and then Refugees like Ogres, Saberon, Arakkoa both Ascended and Outcast, and the Botani fled to the Barrens yes yes, but where are these other races. We had Ogron roaming as guards and stuff before with the Mag'har Orcs but now where did they go?

Also, why can't we give the Mag'har a proper capital city with The Underhold as their capital city refurbished. Awesome right?