regarding the "increase mines" command in any provinces other then in the gold ones: it definatelly has effect, exception beeing "marginal" goods for some reasons(or simplly becouse those goods have such a low output , therfore increasing mines by 10percent does not add up to any actual increase...)
however something intreasting i keep noticing with this. once the increase mine happened let's say in "tahiti", random events are taking into consideration those provinces as WELL. for example got "seek new veins" random event TWICE in less the 40 years targeting...tahiti
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the rule of thumb otherwise is that IF a country has even just ONE gold province, the mineral related events always trigger there. if country does not have gold then it will trigget in an "iron" or "cooper" one. now, in my test, all of a sudden provinces targeted by such random events have expanded in number
but the main idea here is that also tahiti has an increased economic output(trade in the regional cot jusmps in value). the thing i am not sure of if is with regards of how the eu2 engine treats a such aspect( does it take it in consideration when calculating the month/year income?)
-also could you please make a more extensive monarch file for chimu? the objective here would be to have a whole bunch of them with a ruling period of 10-15 years each. just a quick "copy" and "paste", while changing their each and every ADM/DIP/MIL values, as to make sure not all are same or almost same. at least to "spice" things up a bit. also , as ai, maybe make a quick ai event similar as the human does(the first one wich sets the cores), BUT with better sliders and even some cavalery(to boost the ai up so chimu becomes the dominat ai nation in south america, at least most of the time). i noticed now that ANY pagan can get cavalery as well ( likely via random events , only explanation i have).
-regarding random leaders, it seems that indeed ALL pagans get them(only made one quick game as chimu so did not look yet how this fairs in other regions). however , as a human , i got NONE. intended or not?