I was just thinking it's a shame I don't run my weed fields or coke factory due to cost to return not being worth it. Then I had the idea what about achievements tied to collecting x amount of weed,booze, coke.  It would get people like me who ignore there weed fields to start running them again. If the goal between achievement levels was enough of an increase it would help offset the gains of having multiple buildings and encourage players to grow there reputation to buy more buildings as well.