This idea was submitted by Jim Long.
The first person at each yard makes up two trains. One for themselves and one for the next person in line. That next person makes up a train for the person behind them, who could be sitting on a ready track, before leaving with the train made up for them.
If you did this from both tracks you should have a steady stream of freights arriving at both yards. Upon arrival, that engineer would park their freight in the yard and make up a consist before leaving with the units made up for them by the previous departing engineer.
Done properly that should allow for a continuous flow of trains, make sure people didn't "cherry pick" for their consist, and give everyone a turn at all aspects of the layout every night.
I like this idea and would add if we did this, it would spill over to the next session, so there would always be a train made up in each yard. It would mean the trains would have to switch Wellington.