I am with the others here about corn. Corn could lead to ethanol, which could be used as fuel to generate electricity. And most of the stuff to make ethanol from corn is already in the game. They'd have to give us metal barrels though, to store it in; it wouldn't be stored in wood buckets or barrels.
I would like to see more automation. Time is not in infinite supply, and Vintage Story wastes A LOT of the player's time.