Continous Map Scroll
When issuing those wrap-around orders, i.e. from far left to far right, or from top to bottom, for example Hawaii <-> Japan or Alaska <-> Anadyr, it would be extremely helpful to have the map scroll continously in every direction instead of stopping at the borders. I imagine this would be relatively easy to implement, since it wouldn't require any changes to the maps themselves but only to the way they are displayed.
This scrolling behaviour should be turned on or off automatically, as soon as the map has any wrap-around routes. If they are only horizontal, map scrolling should be continous in horizontal directions only as well, if they are multidirectional, map scrolling should be continous in all directions etc., you get the idea.
Maybe add "reset view" button / shortcut to get back to the initial map view quickly.
Maybe let players turn this feature on or off in their settings.
As an addition to the "Reset View" button I think the (original) edges of the map should be clearly marked (for instance, with a light grey border automatically added around the map). This is to prevent problems on symmetrical maps, such as quad Earth; you wouldn't want a player to refer to the "top right Earth" in chat when his view has scrolled and he actually means another one.