There are parents with multiple children in school and they are not able to see all of the children's course cards in the Dashboard.
Since your idea is specific to viewing more courses for a student, you may also be interested in another idea that's open for conversation around having an option for parents to toggle between course calendars by student: Parents: toggle view between children. If you'd like to support that idea, you can give it a rating and/or comment on it.
How do idea conversations work in the Canvas Community?
What is the feature development process for Instructure products?
How do I create a new idea conversation in the Canvas Community?