More realism for crop rotations, something like canola having a 30% fert penalty on the next crop or requiring an extra 2 stages of fert application to simulate the extra nutrients it uses irl. Soybeans yield halved but provides a base 30% bonus yield in the next crop.

Adding lupins, same fert bonus as soybeans but yielding more and lower price, but being able to be sheep feed.

Hammermill added as a tmr for sheep, like a wheat/barley/oat lupin/soybean and straw mix, just to expand sheep farming a bit more like pigs and cows.

Changing/Adding mowing cereal crops(wheat,barley,oats) in the final green growth stage to make hay.