it should have a Parcel designer, which should be into an desired area and with rules such "minimum area", "minimum frontal dimention" facing the closest street", "corner parcels options", "maximum and minimum angle with the street".
If Leveled one beside other, or by "equaling cut and fill" into the parcel or by "equaling to the elevation of the closer street". It also should have an internal maximum slope or a maximum boundary to distribute the slope among parcels' borders.
You should suggest material of the barrier betwen parcels when the slope is so high.
Thank you.