Exactly. Just dash and name, except where I've made a request that they might choose to not honor, in which case I do sign off with "Thanks," My family member'

Exactly. Just dash and name, except where I've made a request that they might choose to not honor, in which case I do sign off with "Thanks," My family member's mother in law writes emails like: "Dear X, I hope this letter finds you well... warmest regards" She will never be convinced not to.