I had a thought:
Getting seeds from crops tends to be a little bit annoying if you have say 120+ produce to seed. Maybe a machine that strains the seeds from the crop, producing some sort of fertilizer/food/etc and a collection of seeds in a similar way the distiller works. You would have to wait like 1 or 2 min per bag of seeds but that would be the con for doing it that way instead of using piggies.
Any thoughts?