Very good article. #10 is a very good idea for me.
I would like to highlight #4 security plus database auditing requirement and GRC (Governance, Risk and Compliance).
I have worked in different companies. Either internal or external auditing will involve DBA.
Being a DBA, we need understand/follow/meet auditing requirement to save the data=business.
SSC is a great place to get these kinds of resources. I visit every day if too busy during the day; I catch up in the evening. I am lucky tonight and did not miss this article.