A product can have a 'date Available' and it automatically appears after that date. It would be nice (as a ticket sales shop) to have a 'Do not Display After' date as well.

Has anyone done this. Clearly it would need a new SQL field, a change to the product page in admin to set up this date (basically copying the code that sets the 'date available'), and a mod to the line of code that looks at the 'Date Available' field in order to decide to display the producet. This would also need to check the 'do not display after field.