I'm glad this Leaf economic plan will take years to pay off and we'll probably be dead before it shows results, because the first thing that'll happen once it's clear Leaf is benefiting from AMITY much more than anyone else (to the degree that ninja will start considering switching sides) is Leaf losing its AMITY seat and everyone else ganging up on us
AMITY can only hold as long as all the nations except Rock feel like they're benefiting from it. If this approach works, we will need to subsidise adopting it in our allied nations too, but it will be a tense time when our economic wealth outstrips the defensive potential.