TPLF has to plan for this eventuality. It is now high time to plot the new map, delineating the border between Oromia and Tigray, the Awash-Abay line. Both Awash and Abay are Tigrigna/Geez terms..... Ejolies will take the rest including Ogadinia and 1/3rd the Red Sea coast south of Tigray's share.
BTW: cursedArtera will be one wereda of Tigray.