I am all about that too Hans; a minimal of work, less equipment and no storage facility.
Like others on here, I have concluded that for my farm a flail chopper is probably best. It is one piece of equipment that only costs $18,000 new ($1500 used), only requires a truck or trailer to move, does not require a big tractor, and has no building requirements for storing the feed...just push it into a pile, pack it down, and cover it with weighted plastic...all on the same day. It makes excellent feed and can even process corn too. I like a single machine that has a lot of versatility.
I have done hay by hand when I first started out and only had 4 sheep. I hand made corn silage too and have posted about that experience on here. Surprisingly it made just as good of feed as what our $250,000 combine produced for the big dairy farm, and this was with equipment I had already around the house...stuff everyone has around the house. But I am well beyond 4 sheep now. I could still do loose hay, but aspects of it would have to be mechanized for sure.
The biggest issue I found with hand making hay though, was not in cutting it, but the fatigue in my arms from raking it and piling it up. If I was to mechanize just one thing, it would be that. It was a huge time-suck and wore me out. I have limited hand scythe experience, but my Great-Grandfather would not hire any farm hand who could not cut at least 3 acres per day, while his best farm hand could cut 5 acres per day. Here I average 6.9 bales per acre, and they weigh 600 pounds, so that equates to 4140 pounds of 1st crop hay to the acre. It is easy to see from that what I experienced, cutting 6-10 tons of hay is doable, but hefting it with a pitchfork is another matter.
But that does not means loading hay into trailers or into movable racks cannot be mechanized, here is a video of a guy doing just that with his tractor. Fortunately the mowing machines, tedders, and rakes are all cheap equipment to buy, it is the baler that is expensive. Where I live you can even rent walk-behind sickle bar mowers.