Whether adding an event or updating one, the user sees the same Success Message (Settings > General > Event Submission Forms). The message "You have successfully added a new event" is a wrong one when the user was updating an existing event.
1. A separate field for "Update Success Message" should be added.
2. There should also be the same setting for Locations - at least the Update Success Message, as there's no Add a Location form yet. Currently when updating or creating an event, the user can be given a link to see the event page, but when updating a location, no such link is possible until this setting is added.