I'd like this. Currently I am not sure the Survival skill does anything at all. Having more food to heal with between fights would be a nice benefit of having Survival as a skill. Then they can go through and reduce the quantity of food you find, or at least make the people of the Grove hostile if they catch you STEALING FOOD FROM STARVING REFUGEES.

Seriously. Everyone is talking about running out of food soon and the game doesn't even consider it stealing if I reach into their barrels and walk off with like thirty apples?

They could also set it up so the food you get from it goes to your Wares section. Maybe it can be auto sold from your camp for some extra cash. Or even donated to the grove to alleviate the food problems, which could have some effect on the refugee vs druid side conflict and make Astarion disapprove.