Sometimes we will schedule emails in advance but not necessarily in date order. Sometimes we don't want to see the emails in the order they were last updated. We often want to see emails in the order that they are going out. Not seeing emails in chronologically has made two team members send out emails on the same date and time because the email that was due to go out what several pages in.
This can be prevented by creating internal processes but I think a simple sort by execution date would be a suitable addition.