I actually have a 471, 4wd, fel, shuttle shift, etc. I must first comment on some of these "issues", than I'll give my honest impression to the gentleman who started the thread.
The top link has NO "draft" control sensor (so I don't understand the comment about "compression force exerted through a spring in the top link")..as far as the ferguson system being outdated - every line of tractor utilizes the ferguson system in one form or another --- let me restate --- EVERY tractor line. How many tractors don't have a 3 pt hitch? That is a Ferguson invention...
Now if you are talking about the pumps, then perhaps that is where you should focus your comments. And if 5-10 GPM more than many competitors is outdated, then perhaps I am in an alternate universe. The pump system is called Ferguson & Gear, and is utilized by many major manufacturers, such as McCormick, Farmtrac, AGCO of course, and others..
As far as my impressions of the 471 - I have over 100 hrs of hard use on it, and found little to complain about...that pumping system, when running my FEL, will pick up 6,000+ pounds to a height of just above the hood (I have a combining valve installed). Pretty good for a 60 pto hp tractor. I have carried 5X6 rolls of hay all over the place, with spears on both the 3pt hitch and the fel. If this tractor wouldn't pick em up, I wouldn't have it. The perkins 1104 is superb, as others I have had. And the shuttle is outstanding...
Now the gripes: no hydraulic oil cooler (most tractors don't have one though); pto lever is mechanical, which requires adjustment as necessary; no cupholder ....
I would suggest, that for the power and price, it's a pretty darn good bargain.