As the game goes on, you sometimes want to increase the size of your garrison forces. This involves a lot of clicking around to reset all the ship orders, especially in a large game.
It would be nice if you could give garrison orders by percentage instead of actual number of ships, or alternatively have some sort of global switch that changes the quantity of all garrison orders with one click.
I realize there is an option for this in default action but it only applies to orders given after you change the setting. Old orders still have to be manually changed.