Dancing Hoskuld
Deity
@thunerbrd the tag for obsoleting improvements by tech,
I am embarrassed to say that it turns out that it was not the improvement I needed it on but the build (the build infos file in XML/Units). The point is to stop workers building that improvement not to turn the improvement off as existing ones dhould still do their thing.
Sounds like a good plan. More detailed than what I was going to suggest which was to do what RoM did and increase the amount of food a unit consumes a turn.


Basically my need for yield changes on tech is to better simulate certain technologies like gathering, fishing, etc. Basically terrain yields would begin lower than they do now. You research gathering, grasslands get +1 food. You research hand fishing, you get +1 food on water tiles.
Not sure if I am explaining well enough. The base purpose is to get away from early extreme unhealthiness to simulate difficulty of maintaining food supplies.
Sounds like a good plan. More detailed than what I was going to suggest which was to do what RoM did and increase the amount of food a unit consumes a turn.