Hello, I suggest that the brew must be also used for gather resource. Then the Team could increase the rate of stocking and producing brew, so that the player could have the choice of both gather resource, or attack monsters.
Why should it cost brew to gather resources? It already costs quite a bit of time. It takes me about an hour and thirty minutes to gather a level 7 node (90k resources). Adding a brew cost on top of that would be pointless. Besides, whatever the brew cost would be would just be recouped automatically in the time it takes to gather the node anyway. I regenerate about 1.05 energy every minute, so I would regenerate a little over 90 energy in the time it takes me to gather the node.