This is an interesting concept! However, I think Al-Andalus would make more sense as a variant civilization rather than a main one, ideally branching from an amazigh civilization. As an amazigh myself, I’d prefer the civilization to be called ‘Amazigh’ rather than ‘Berbers’, given the historical connotations of the latter. Also, an amazigh civ should represent the entire Maghreb—not just modern day Morocco, but also Algeria, Libya, Mauritania, and Tunisia. Their influence spanned the entire region, and a civ design should reflect that broader historical and cultural presence.
something like what was done with the chinese civ, one civ representing multiple dynasties (Tang, Song, Yuan, and Ming Dynasties).