Indeed, the real problem I have is having to defend all my land... Its so bad I made a separate armed forces branch for every continent. Everyone else has the advantage of having their land packed together... So the Nazi's and Yugo go out and squander that advantage xD Clearly genius at work.
Not to mention, it relies loads on the other powers sleeping. For example, I blockaded Gibraltar, have fun getting enough supplies through and quickly enough to support your Portugese and east African invasions Duck. If other people begin to do this? Egypt might collapse the Seuz as it seems they are losing, not to mention other countries might follow suit with embargoes, and have fun expanding with no money.
The Japs are likely to be alarmed that they suddenly got bordered by the Reich and in turn support Russia, the Americans and their leader might jump at the chance to rebuild their public image a bit consisting their rebel problems, Stanland is going to feel threatened and the Commonwealth is going to wake up to find half their neighbours gobbled up... I am certain most of those factions are going to intervene
Also, lets just ignore the rebel factions we have, let us go and get more...
From a political, economic, military, stability and supply line POV, its a terrible plan... That is unless this is some Mussolini esque plan. Maybe the two countries are already struggling and are trying to distract people from the problems by building an empire and saying "No worries, alls good!"? Maybe that's what's going on, but I would think that would be mentioned before? I dunno.