I would have based it on regions where the 18 ones created in the 80s become a full governing autonomous states or the old 8 regions that existed in 60s and 70s as I believe that could help Somalia to walk again and rebuilt its lost state institution and Qabil be kept away from political scene in favor for regionalism regardless of what your background as Qabil affairs should be handled by local traditional elders or the community.
Cultural allegiance isn't linked to 1960-80 state carved border, if it was, then u have a leg to stand on, why do u care what they believe, just carve a system that ensure their cultural value clannism is productive, why are u so scared of 'clan' are u a 'weak' clan, are u trying to conceal yourself under booli qaran or trying to mix with other clan, thats sad bro, love dadkaga, other clans dont care 4 u in reality somalia, only maybe abroad does somali identity even work and only 'social level' not even 'diaspora commitee' or any social system.