@Bob - thanks for the feedback.
The town cargos were awaiting TownControl (which is a proposal only), and would affect town growth etc if that were possible. However if you try the YACD patch, they're good with that.
Supplies behaviour will get revised at some point, probably so that the amount delivered affects the chance of increase, scaled depending on current production (low/high etc).
The farms are low. I don't plan to increase them. Try a low capacity truck set
@Leanden. No, it's not more efficient.