Having separate fields for title and subtitle would be helpful for users who use ETD Admin reports for cataloging, and/or who use ETD Admin with Esploro integration.

There is no foolproof way to validate that the author entered the field/s correctly, because the things that often indicate a subtitle could also have other meanings on occasion. But it could be very helpful if the system could look for certain characters (like a colon or a question mark) and then do a popup like this: "It looks like your title might include a subtitle. Please be sure to use the designated fields for title and subtitle." Then there can be buttons for "Go back and edit" and "Accept as is."