We do have an enhancement listed to ask if all members of a household should be updated if the doctor/dentist/insurance information is updated for one member. We will note that there has been another request for this.
If you have specific ideas, please share those.
Update 1/28/2021: Legacy database v. 5.8.0.6 and Windows App v. 5.5.4.1 added features to better handle updating the medical/insurance information for all members of a household. Those fields are now populated with a dropdown list of know values for the household. Also, when changing the information for a member, there is an option to change it for other members.