Will someone make a simple(maybe) module that disables the product when a customer buys it with a certain attribute selected, so that they are the last person to buy it, and they can still download the product. once the 7 days(or 5 downloads) is gone it makes a notice in the admin panel saying you can now delete the product and download. If thats too hard to make then just disabling the product and still allowing them to download would be fine. And maybe the module options could contain these customizations in the admin panel:

Module Active(turns on/off this module)

Option Name ID(the option name wich the module checks) Example: 1

Option Value ID(the value wich the module check for) Example: 2

It would be nice if this module were located in the admin menu right under "Modules>Order Total".