Great thread OP.
I'm from a farming background (grew up on a dairy farm, dad was head dairyman). My parents are retired now but still live in the same area, so I hear about all the changes.
Basically, nearly all the small family farms are gone - or going. The big old stone farmhouses are being sold off at megabucks to retired drs / lawyers / accountants etc from down South, or to high-earning professionals who commute to work - or work from home (our nearest city has a massive teaching hospital and university). The fields are usually bought up by land asset companies, and then leased to agribusinesses who turn up with gangs of workers to plant and harvest cashcrops or throw up polytunnels. Other than that, and the occasional tractor / sprayer through the year, there's never a soul in the fields. There's very little livestock now and no dairy, except some sheep on the hills. The local school has been decimated - families can't afford to live here and if you don't have a car, it's pretty much impossible.
So based on this, my vision of rural areas in the future is pretty bleak... a pastiche of rural life for well-off people seeking a naice lifestyle - without any of the inconveniences of needing to make a living in the countryside. And actual farming being done by large-scale agribusinesses, who have no stake and no interest in rural communities, and who either mechanise their operations or employ itinerant workers. Not really a question, more wondering if you've seen this happen down your way (I'm talking about Scotland).
Also... you mentioned that subsidies make up 5-figures-worth of your income. Could you survive if they were stopped overnight? Sorry, I've lost track of what the government has said it will do re. farming subsidies when Brexit happens.
Thanks