You know when I had my lowest moments with maryoole shenanigans I would say "Maybe it would be best if Ethiopia annexed us."The K5 ownership issue, Tigrays vs centralized Ethiopia, Oromo secessionists vs centralized Ethiopia, and lingering hatred between Eritreans vs all Ethiopians (although declining) will prevent pan-Horner cooperation.
Somalis and the North Sudanese have no issues with each other, same with Somalis and Eritreans really (except for some Djiboutians beefing with them over border disputes).
but this was in Meles' day. Now I just go.