Provinces for free? No more!

Lately I have noticed that a lot of players win scenarios by making multi-accounts or asking friends to start a map with them only to give them all the provinces at the beginning of the game and send the whole army to fight someone else. Such a player not only has twice as many provinces to start with, but also has a weakened neighbour to conquer. It took me a while to figure out how to remedy this, as the system for reporting such behaviour simply doesn't work. The only sensible idea I have come up with is to rework the maps so that players are not adjacent to each other at the start and are always at least two or preferably three AI countries away. What do you think? Anyone have any better ideas?