I've thought that it would be helpful to keeping the numbers even if the losing two countries were compensated with perks as well. Say give the winning side 20 perks, and each loosing side 10 perks in each category. This would help eliminate the side switching "so I ken get mah WArs win perks
!!!".
Or maybe even drop the 'map win perks' entirely and give a very small compensation (say 5 perks in each category) to the side with the lowest lowest numbers when the map is won. This would change the goal of the side switching, with people trying to get to the lowest side, as opposed to the highest numbered side.
Also to steal an idea from another thread, perhaps expierament with a 2 sided war. On Tuesday (or whatever day HTC picks) have an arena with just two countrys. Two completly different country names, say dimonds and hearts? If the community shows it can keep things fun with a two country war, then maybe consider changing the MA's to a 2 country set-up.