So as far as I understand, rationalism will work now with 15pop cities and +4 adjecencies. I really like rising population needed, but... The main thing here is +4 adjecency, which is pretty hard to achieve without being lucky with map generator granting a lot of mountains, reefs, geotherms or plantations in case of Maya. Till now, every civ except Gauls could make +3 campus everywhere, just by building dostricts around. Now it would be limited only to Gov Plaza region, and only if this region has no luxuries/strategics, so districts are not blocked. There are few civs though, that will not suffer from this change: - Korea - guaranteed +4 campus (except conquered cities), Seowon also boost farms around, so growth to 15 is easier than other civs - Australia, again binus yields to campuses and more housing - Japan - +1 adj per district makes it still easy to reach +4 - sometimes Netherlands - less consistent than others, but still Netherlands can sexure a lot f +4 campuses and that is all Who suffers the most? The Gauls It was hard to make a +3 campus with Gauls with no adj from districts. +4 is impossible without reef clussters. Were Gauls strong enough till now? I don't think so. So in my opinion introducing +4 rationalism is a huge nerf to nearly every civ. Except 3: Korea, Australia, Japan - all 3 being OP prior to change. Now they will become even more OP. All civs, except those already very strong civs, would be limited with campuses only to mountain ranges / reefs. Korea, Australia, Japan can still campuses everywhere and fully benefit from rationalism card It recalls a little work ethic changes. This balance change made OP Russia even more OP. So what is next? Boosting back Gran Colombia or any other very strong civ to make it even stronger? I wonder what are your candidates Wouldnt be better to increase population requirement only?