Sure; though I would argue that those types of commits are mostly a result of people not running "make local" first. They should be slapped =)
But we've in fact already created a way better interface for seeing when packages were updated. It's called Koji. For example:http://koji.fedoraproject.org/koji/packageinfo?packageID=57
And it's doing things the right way - timestamps, user who initated the build, etc., are created by a computer, not manually input into a text file.