When the user selects a projected sketch point/line/curve, Inventor should display the same information that would typically appear in a "Select Other" dialog: for instance, "Point (Sketch1)", "Point (Block1)", "Vertex", or "Center Point".
There should also be an option in the right-click menu to de-select that sketch geometry and select its ReferencedEntity instead. The user could then use "Zoom Selected" to see what was projected.