The ability to use the UI to push down a setting to all current users, one time, would make implementing new features So Much Better.
from
[Previous Replies Example]
to
https://meta.discourse.org/t/how-to-control-previous-replies-in-emails/39834/9
An option in the admin UI to “apply to all” could help all existing Discourse communities, especially ones which are Hosted, where admins don’t have access to the rails console at all.