Hello!
Since we already have a priority system for zones, like dumping and storage, I feel like a priority system for Grow Zones just makes sense and shouldn't be that difficulty to implement. I would love to tell my people to prioritize Rice over Corn over Trees without needing to manually disable / enable sowing on the zones each spring.
Would be convenient! It's annoying to micromanage a colonist when they keep trying to plant COTTEN during a famine.