Flarum provides extensibility by allowing extensions to hook into domain events. For example, various Saving, Deleting, LoggedIn, etc. Before our stable release, we should make sure that all core/bundled models (and other domain events) have are properly dispatched when they should be. For example:

• Tag's Saving should be dispatched in CreateTagHandler (flarum/tags#92 (review)),
• login via SSO doesn't send out LoggedIn events (#1994)

There are likely other cases. After we analyze where this is needed, we might want to do this alongside #1223 (if we decide to make that change).

Anyone interested to contributing could start by assembling a list of places where changes are needed.