Thanks! I was being just being dim and needed to enable minor factions.
Nice mod.
Seems like would benefit from changing the landmark at Black Pit - as currently it buffs spiders, that can't access.

That's odd, considering this mod doesn't change anything about faction selection - all of that is done by MIXER!
MIXER needs to be loaded before this mod, then in faction selection, next to the 'Select Race' button you have the Randomise button AND a 'Show Minor Factions' button, the latter is added by MIXER and you might have to click that to make it appear.
The faction should be almost all the way at the bottom in the Greenskins tab, the icon is a black shield with yellow skulls. Hopefully this is the issue!

Sounds promising tried it but couldn't get faction to appear in selection screen. Disabled ALL mods but this, and mixer, variant selector, etc. Looking forward to trying it out. Thx.