Repeat Order Button
Deployment and transfer of supply lines in local deployment games on large maps is currently tedious and repetitive. The idea is to add a repeat button to the tab that appears when you click on an order. Clicking this would change the color of the order and make it appear in the list at the start of every turn. The order would continue to repeat until deleted.
This means that once you set up your supply lines once you can leave them to repeat until you need to change something.
A local deployment mod and user script already exist for this. For details see https://www.warzone.com/Forum/724961-local-deployments.