Wrth i Ddeddf yr Amgylchedd Hanesyddol (Cymru) 2016 gael ei pharatoi, cododd Aelodau Cynulliad, rhanddeiliaid a'r cyhoedd amrywiaeth eang o faterion sy'n effeithio ar amgylchedd hanesyddol Cymru. Byddai modd mynd i'r afael â rhai ohonynt drwy gyfrwng y ddeddfwriaeth honno. Mewn sawl achos, fodd bynnag, roedd polisïau, cyngor a chanllawiau newydd a oedd yn seiliedig ar yr athroniaeth a'r arferion sydd ohoni ym maes cadwraeth, yn ymateb mwy priodol ac effeithiol.
During the preparation of the Historic Environment (Wales) Act 2016, Assembly Members, stakeholders, and members of the public raised a wide range of issues affecting the Welsh historic environment. Some could be addressed through that legislation. In many cases, however, new policy, advice and guidance, shaped by current conservation philosophy and practice, offered a more appropriate and effective response.