Just for the record, I liked the initial post because I’m in support for this. I could see multiple ways of utilizing those locations. Private Profile Notes, for example, would benefit from the outlet on the User Page.
@Mittineague, above the {{#if viewingSelf}} on the user page, and before bookmarks on the user menu (or after depending if the CSS is using floats).
So there would be two outlets, one specifically for the User Page and one specifically for adding an icon/glyph only link on the User Menu.
User Page Location:
https://github.com/discourse/discourse/blob/master/app/assets/javascripts/discourse/templates/user/activity.hbs#L28-L32
User Menu Location:
https://github.com/discourse/discourse/blob/master/app/assets/javascripts/discourse/templates/components/user-menu.hbs#L11-L20