A significant amount of work has been undertaken over recent years to consider what reforms may be needed to make the Senedd fit for the 21st century.
Mae cryn dipyn o waith wedi cael ei wneud dros y blynyddoedd diwethaf i ystyried pa ddiwygiadau y gallai fod eu hangen i wneud y Senedd yn addas ar gyfer yr unfed ganrif ar hugain.