It's been introduced before that the side with lowest playernumbers could be awarded with extra perks or even points for each kill. It's logical because if odds are 2:1 getting a kill becomes twice as hard, or even harder when compared to being at 2:1 advantage.
I think that low number countries should be compared to the biggest countries number of players, then multiply perks/points with the difference. That is, country A has 200 players while country B has 100 players. For each country A player country B player kills he receives a double amount of points.
That would ensure that even if sides are jolted, there would be movement to the smallest country - all those people who now switch sides before reset and all those people who play for points / rank - they would move to the smallest country to get their points.
This would be MUCH more logical than the current movement to the winners side which a) does not even work regarding to perks because of the 12-hour rule
b) unbalances the sides even more in the end