I often wish i had the option to copy the orders from the previous season (and then modify what needs to be changed) - i think that would be very convenient in many situations

Unlikely to be worth the effort but useful when you are playing on the mobile site and in later stages of the game/if you have more units and need to keep repeating the same order by hand every turn esp if there is a semi-stalemate

That doesn't seem worth the coding effort.. When does this become useful?

A button to enable a set of orders to be made perpetual would be nice. Obviously, it would need to handle misorders if the board situation changed. Don't know if the current engine supports that.