As of now, the "description" field on idea custom fields is for internal setup reference, and does not present as descriptive help text on an idea portal showing the field.
It would helpful (for any custom field type) to have an option to provide descriptive help text on the field that is customer-facing on the portal.
|Release time frame|
Thanks for the idea!
The copy you enter in a custom field's description appears as a placeholder within the field of the ideas portal form.