For 10 points and a command slot this upgrade increases the range a commander can issue orders at from range 1-3 to range 1-4.
At 10 points this is an averagely costed command upgrade, however the benefit of increasing your order issuing range is rather limited. The points are often better spent elsewhere unless you have a specific plan in mind. It is also important to note that this only increases the range at which you can issue orders, it does not increase the range at which you panicking troopers can use your courage value at.
If you are running faster units such as speeders or have a commander that is particularly slow then this can be a good upgrade. Also if your mission plan involves splitting up a great deal (such as disarray) and you only have one commander this also an upgrade to consider.
General Veers Expansion, Leia Organa Expansion