This is a
really interesting idea. I have no idea what it'll do to game balance, but it's certainly much more realistic.
One alternative would be to apply the unhealthiness to the tile itself -- treat a raw livestock tile as equivalent to a wetlands (+0.5
, I think?) and a livestock pasture as equivalent to two (or some other scale, idk), while the livestock
resource would give +1
to indicate that every city benefits from the more varied diet. That way, proximity to livestock increases disease (ameliorated by smokehouses), but the diet makes livestock worthwhile as a food source.