An idea on farming. Well more specifically, ‘soil’ quality and crop rotation.
If we say, we have a ground soil quality of 10. A nice average number and we want to increase it without trecking all over the world. How about we use poo… or fertilizer.
Cows and other domestic animals would produce poo, based on the quality of the food they are given and the quality of the animal. This could then be picked up, then put in a special container with some soil. Over X amount of days the quality of the poo would average with the soil and the quality of the container, then become fertilizer. This fertilizer can be used on the ground soil to increase its quality. (Effect only occurring on a full plant growth cycle)
However, this would make quality races just a matter of putting on more and more fertilizer. Easy mode!
So, the growth cycle for the plant that the fertilizer is used for will have the full bonus of the fertilizer. If the same plant/crop is grown in the same place again the ground soil will revert back to 10, removing the fertilizer bonus. BUT if a different crop is planted and taken to harvest, part of that fertilizers Qvalue becomes permanent. Once the fertilizers effect is permenant, or removed. You can apply its initial effect again.
An example
Bert has Q10 soil, but can produce Q20 poo. He puts this poo in a container that his friend has made at Q20… meaning that Bert will have Q10 soil, Q20 container and Q20 poo. (geometric mean) This would give Q16 fertilizer.
Bert then plants his Barley in the now Q16 soil. A farming montage passes.
Bert then farms his Barley, feeds the Q20 produce to his cows… and plants some pumpkins on the fertilized land. Bert is happy with his new increased quality soil.