First - thanks for changing back.
Second, my suggestion.
In my opinion, there's never a need to have 4-5 (or more!) people working a farm. (I never hire more that 3 tops and they're usually but not always people I know). I think having some reasonable limit on the number of hires would be useful - perhaps the number of hires allowed would be dependent on the size of the farm....
Thanks again for your work on this fun game.
Lauren