For anyone curious, look into the cybersyn mod, it implements round robin scheduling! It also has other cool features like a train can visit several requester stations without going back to depot first, it's exactly the vision I had here.

'How about making the LTN station priority dynamically controlled by a timer, so that stations receive higher priority the longer they go without a delivery?'
LTN already does this.

Imagine this: resources are finite, and must be rationed across stations, and there must be an algo to decide who gets what first, this is exactly how your CPU works, even for extremely lightweight applications. The answer in Factorio of the typical train logistical issues is "Just always have ...

I am trying to achieve balance of services to starvation via a CPU scheduler called Round Robin. In the future I might see about implementing others like HRRN, but you will see why I'm starting with Round Robin first. A simple example: https://youtu.be/aWlQYllBZDs?si=mV_2gr9VaAX088Hg But I learned t...