Well I would love such video. And I will try what you said. I really want to go back playing. And have you tried cargo mod? I like it because it adds complex chains for cargo. But I never manage to have a working line for more than a year.
Also one thing that probably ruins my lines and its related to the 20 min rule (OMG I hate that rule), is that I build my map as a network. So the tracks from industries most of the time connect to a huge hub of other lines. So I have a bulk track of 4 or 5 tracks with trains running north and south. And most of the time I only duplicate when really necessary. So there are some waiting time at connections. Waiting time probably is the one that ruins my setup.
But a busy network is much nicer to look at than exclusive tracks for each train.