I think the main issues with the ABNW ruleset are:
An economic system which provides only two ways of economic improvement- difficult to control update events, and extremely inefficient massive investment. I think it would be better if, in the future, you introduced more ways to improve the economy, to provide some variety.
A stability system which is a slap on the wrist for large powers, crippling for small nations, and has very little to do with how you actually treat your people. Your proposed ruleset seems to fix this nicely.
A monolithic technology system. I think that a better tech tree would have several price modifiers. The total price of a technology would decrease on a roughly hyperbolic curve as more and more nations researched a technology, so that while tiny nations could independently keep up with technology. While still remaining some distance behind the cutting edge, they wouldn't be ridiculously far behind because even simple technologies would take 15 turns of their entire economy to research. Other price decreases could be achieved from being a close trading partner with a technology-possessor, industrial espionage, and the like.
An economic system which provides only two ways of economic improvement- difficult to control update events, and extremely inefficient massive investment. I think it would be better if, in the future, you introduced more ways to improve the economy, to provide some variety.
A stability system which is a slap on the wrist for large powers, crippling for small nations, and has very little to do with how you actually treat your people. Your proposed ruleset seems to fix this nicely.
A monolithic technology system. I think that a better tech tree would have several price modifiers. The total price of a technology would decrease on a roughly hyperbolic curve as more and more nations researched a technology, so that while tiny nations could independently keep up with technology. While still remaining some distance behind the cutting edge, they wouldn't be ridiculously far behind because even simple technologies would take 15 turns of their entire economy to research. Other price decreases could be achieved from being a close trading partner with a technology-possessor, industrial espionage, and the like.