That would only be useful if you wanted to sort them by date modified on your machine. I can see your idea behind that. The thing is, the database does not, or only support it partially. In the current state the exact modification time on cuesheet data is not given, you can only track the latest disc entry modification as a whole.
I was planning to add an extra datetime for cuesheet modifications, which would cross your idea. As soon as my plan is realised i can see what i can do regarding your idea.
PX-760A (+30), PX-W4824TA (+98), GSA-H42L (+667), GDR-8164B (+102), SH-D162D (+6), SOHD-167T (+12)