A New Trade for taiga villages

So I got this seed for a Taiga Village and I decided to plant Sweet Berries and then I realized that there was no reason really because they don't give that much hungry back then I thought there should be a trade the gives you emeralds for them with the Taiga Farmer and no other farmer because it would not make sense for a plains farmer because they don't naturally grow there so there would not have an easy resource or an easy source of food. i think this would be good because it gives one more point to sweet berries and sweet berry bushes. Thank you for reading this long thing hope we see eye to eye.