This dialog probably shouldn’t try to display all the names of callers — a particularly popular macro could result in a dialog so large the OK button is off the screen. There’s also the issue that you’d have to screenshot it in order to have the list to hand when going through the editor.
What would be ideal is if the search field had calls:«uuid» as a filter, which would show only macros that directly invoke the macro with the given UUID. (A contextual menu item to populate the search field directly with that would be a bonus, too!)
Another vote for @DanThomas's macro for doing this.
But you can also get a long way by using the phrase "execute a macro" in the Editor's Search field, combined with a key word or two from your sub. For example: