Me, along with many other replay makers go back through their replays and look at every little aspect over and over again until it's right. I like to get to the part I want to look at immediately, every time. For the chain tricking challenge, the person with the 32nd mod will have to wait 16 thousand frames. That's a long time for something you have to do over and over again. Even with smaller replays, I hardly think that this is unnecessary. I don't know if you know how often I edit/watch/findflaws in my own replays before I think they're right (and I know others do this).