What is Djibouti plans with Ethiopia investing into Berbera? It's obvious as day they want to make Djibouti and Berbera compete and possibly conflict. With that Rail to Djibouti, I am pretty sure, the bulk of ethiopian goods will flow through djibouti and the remaining might go through road via berbera.
Puntland is focusing on taking the livestock trade from DDSI through galdogob and possibly pushing further into Oromo regions on the western flank. This will require cooperation from DDSI administration to build good infrastructure around Wardheer
The orange area is close by to puntland heaps of nomads. The green area can connect to doolo to kismayo port. PL/JL can literally share the ethiopian trade if the DDSI had a pro darod policy and invested into infrastructure around 'pro darod' regions.