Feature request: "editors should receive a notification when another editor or a bot creates a subpage of either their user page or their user talk page." - @Steel1943
Benefits: "assisting editors detect possible vandalism or misplaced pages in their user space"
Requested at https://en.wikipedia.org/wiki/Wikipedia_talk:Notifications#RFC:_Add_notification_when_an_editor_creates_a_subpage_of_your_user_page -- (permalink)
There is some discussion about whether or not bots should trigger the notification.