Would like notifications by default for content I edit

As it stands, a user must explicitly decide to watch every space they care about. Often, caring about a space is triggered by having contributed to it in some fashion. It would be nice if a default notification mode could be set to send users notifications for every page they edited or commented on. In the user profile they could turn it off, or they could stop watching a particular page or space if they no longer cared about it. As it stands, a user can contribute to content across many spaces, and lose track of them because they didn't remember to watch each space.