Story sub items with checkbox before accept/deliver

The user interface of PT shows stories as collapsed for me, so only the title of the story is showing. The description and comments are only displayed if I expand the story. The workflow I usually have is to click Deliver and Accept on stories without actively expanding the story, my guess this is typical. Therefore if I put sub items in the story, the chance of me reviewing each of those sub items is low. One solution I thought of was if I created sub tasks, then before the story could be delivered or accepted, the story had to be expanded (UI forced this) and the user had to click on the checkbox for each of the sub items, then the story could be accepted/delivered. If the user created no sub items, expanding the story would not be necessary.