Your solution to a problem is create problems?
And I don't get Somalis who say Ethiopia needs a port. How's that a Somali problem? It's likely saying my room doesn't have a window, yours does so let me move into your room.
In any case, Ethiopia stands a better chance of disintegration. Forgeting about annexing Somali, there will be lucky if they survive next election. Ethno-nationlism will be its downfall.