Sorting based on Last Modify Time

In the editorial assets manager, you can sort assets according to the Start Time but not Last Modify Time. If I do an upload on October 3 at 9:46 a.m., for example, it would be helpful to be able to sort by Last Modify Time to see all the assets that were in that upload so I can more quickly add them to different sections, add flags, etc. The uploaded assets often come through with different Start Times because of when they were created or placed for our print edition, but even when they all have the same Start Time they are scattered through the editorial assets manager. I can't do a Search based on the Last Modify Time either—only the Start Date. Can this functionality be added?