It seems like it’s usually more efficient to create 1x11 farm plots rather than regular big ones, at least early on before the amount of tasks causes game performance to drop.
Why not increase growth efficiency of crops depending on the amount of open spaces directly surrounding it? That would reward placing farms in nice open areas, and it’d make you think about what you put next to them.
Also, when placing small bits of farm to fill irregular areas, they can come out asymmetrical, which doesn’t looks great. Wouldn’t it help to be able to merge or expand existing zones so they come out nicer and use their space a little better? That would also mean less separate tasks active.
Lastly, would it be good if you could see where objects will go in the zones you make before you finish placing them, and rotate them while you’re at it?