they already did that with north africa, they just mashed up every berber up into butr and baranis
yup, but those tribes were not independent cultures.
There were some 250+ Berber tribes in the Maghreb, grouped in 8+ confederations (Masmuda, Ghomara, Sanhaja, Desert Sanhaja, Zanata, Kutama, Huwwara, Lawata to name just the main ones), many of which overlapped, held inconsistent territories, or subdivided into further sub-confederstions like Maghrawa or Banu Ifren each consisting of dozen own tribes...some of them changing their confederation alleigances over time.
Those were no cultural ethno-linguistic groups, but more of ancestral-political units.
Having even those 8+ major confederations as separate cultures would make Maghrebis more bad than good.
EDIT:
Just in case you or anyone else would be interested in more detailed setup of Maghreb, in which many/most of the relevant tribes are present, you can check my mod and its more detailed map and dozens more new playable political entities:
https://forum.paradoxplaza.com/foru...vanilla-map-wip.1421575/page-11#post-28065887