It is suggested that this is limited to 3 to 5, so as to ensure a consistency of approach and that analysis remains focused on agreed key issues.
Awgrymir bod hyn wedi'i gyfyngu i 3 i 5, er mwyn sicrhau cysondeb o ran dull a bod dadansoddiad yn parhau i ganolbwyntio ar faterion allweddol y cytunwyd arnynt.