Is it better to ask a new question or use necromancy on a very old question?

I remember a few years back someone asked a question about plot twists in movies. I JUST saw a little known documentary that had a major plot twist in it. I thought that was very unusual. I was tempted to bring up the very old question of plot twists and put it in there, but no new people would see it.

Is it better to bring an ancient question years old to the top so you don’t ask what’s been asked before? Or is it better to ask a new question so that people who signed on after the question was asked can get it in their feeds if it might interest them?