the single most import thing ive found that society needs is cheap housing. which to me means a low cost of living. People should be able to cover rent and food by working one week a month.
the further away you get from the city, the less expensive the land is - in theory. rmls.com pretty much only lists lots in cities so its hard to tell whats for sale inbetween cities.
it sounds funny but a trailer park may be interesting from a financial point of view.