So I'm assuming the southern orcs are the tribe whose camp Breena and Gaja came to, right? What do we want to do about worldbuilding in places where we have existing stories that establish some truths/realities? Should we go ahead and put those characters (Urhug, her lieutenant, the fact that she takes the hands from those whose leadership she challenged and defeated within the tribe) in the thread free of charge, and build around that? Or should we recreate those things at-cost? Or do we say this is a different tribe?
Basically, what's our worldbuilding strategy for things that already exist in some of our stories? Are we trying to avoid touching things that already exist (The Onarfi, Grigori, Midland, etc.) -- meaning this southern tribe is not Urhug's tribe, or are we going to add-on and build-out existing elements?