I would say putting the smaller farms on an equal footing in terms of money with the larger ones is vital. Farm subsidies are a huge talking point with politicians talking about the subsidies helping the small farmer. Yet most of the money goes to the major corporations (no surprise there). In fact, the small farmers get an unequal PERCENTAGE of the total.
That is the tough one, I think. My suspicion is that we (small farmer, anarcho-minded) need to ignore the old system and just create our own new one. Fighting the beast in the face seems to just make it more nasty. The beast needs to be starved, which your suggestion could help with.
How about starting a token that is used by small farmers...
I've seen some movement with that in the permaculture sphere. It doesn't seem like it has gone very far. Though, I don't know why any existing blockchain such as bitcoin or whatever isn't used.