Editor at Lookout Games
Just an idea that came to my mind. I didn't try this one yet, I just want to throw it in for dicussion. You might either wish to allow all players what I propose or create a self-made occupation card that gives the power to the player who plays it, only.
Occupation (or permanent power for all players)
Hunters & Gatherers
Whenever you take resources of the same kind (or food) from an action field you may pay 1 food per die to throw a maximum of 7 dice for additional resources (or food). You may pay additional food to raise the score rolled by 1 point per food payed. Divide the total score rolled by 2 for food, by 3 for wood, by 4 for clay, by 5 for reed, and by 6 for stone. The result (round down) is the amount of additional resources (or food).
Here an example if you do not know "Stone Age":
You choose to take the 6 wood lying on the "3 wood" action field. You decide to get additional wood by rolling dice. You pay 2 food for 2 dice. You roll "2" and "6" for a total of 8 points. As we're taking wood, we divide the total by 3 and receive 2 additional wood. If we now payed 1 additional food, we'd receive 9/3 = 3 wood extra.