This does not address my question.

This does not address my question. Can a response (Contact Us) form be structured like an ordinary email wherein you enter a "Subject" line. The recipient, in this case our company, can see at a glance what the inquiry is about and direct it to the proper department.

The possible workaround for your requirement is to create a new text field in your form and set the {subject} as the email subject so that they can enter a subject line and the for the recipient (your company) to see the inquiry at a glance.

Let us know if you need further assistance.
Regards.