BTW: I finally added “eco balance” to my graph! Now civs like Teutons, Aztecs (and even Khmer) are better represented as they need less investment to “balance” the buildorder I used for my calc. Note that it is for most civs actually a negative investment, as they still benefit from the free food harvested before. Therefore they can have more TCs which are the biggest eco investment - this way at this stage of the game they have actually a better than “balanced” eco because of the use of previously collected ressources.
