Things to check out so we can improve this
I played a few games and came up with some ideas about this economy problem.
1) Most countries start with defined trade agreements, this trades were based on vanilla economy models, and ATM most countries can't satisfy it.
For example HOL used to have spare materials to give to most countries, and it start with a lot of trade agreements in exchange for goods.
The catch is that HOL don't have thouse materials anymore and even without trading what they don't have, they can't sustain for themselves in this new economy.
Somehow and just with this exception, HOL's Puppet feeds em up with all their needs, but this opened a question mark in my head, maybe most countries are still trading what they don't have, and usually unless a war starts, and they end having low efficiency in trade, they won't cancel it.
Suggestion: Reworking all the starting trade agreements might help all thouse countries affected.
2) Material base for most countries were severely reduced, you can see a lack of energy in the world were you had spare in vanilla, this things are hurting the Trading AI a bit, making it worst that its on vanilla.
As most countries have more IC than they can't mantain, and basing on what i found out in point 1 they also trade what they dont have, you have economy sucide in mass.
3) Reduction of IC in most countries are leaving countries almost dead, it might be better to erase em from existance?? well maybe the formula used differs a lot from vanilla, but whats more realistic? I think this is also hurting the world economy a lot.
Basically even when we all know the errors that vanilla already have, i think this things are adding more problems while we should be finding solutions.