Jup such models could have hundred of material zones, considering the construction.
alone the Wheel Parts could carry 16. I often think about it but it also could make it
complicated to ones who rather like it simple. so I think if one really wants to have specific
zones he can add them with the grouping tool with ease. actually it is just to mark a Polygon
then hit the "+" in a new group then assign it as material.
Also a good training to get to know the Possibilities as these groupings come in handy in
many things one wants to do esecially when it also comes to creating own morphs.