Sort compositions by length - one for the classical fan

If I click through on a composer (Mozart, say), then I choose a particular composition (say, Le Nozze di Figaro) I can sort by a number of very useful keys: popularity, date, K number etc. But what I cannot do in the example of Mozart’s Nozze is to sort by composition length. Such a feature would be really useful in this case because it would allow me to sort out complete recordings of the opera from the - innumerable, but much shorter - recordings of single arias or scenes. It seems to me that this would be a pretty simple change (it’s just an extra sort key on data that exists in the view of the list of compositions) and would help all classical fans like me!