ru4por, I'd argue that quality is not 'completely' subjective... The focus of my post was on environmental quality, which can definitely be objectified. Eroded and compacted courses can objectively effect landscape experience and function. Surveys could and testing can prove this... Elephant skin landscapes, stunted vegetation, rilling and gullying do not help the newbie impression/experience and encourage returning to play again... Disc golfers who have been playing a while are more blind to courses like this because they are more focused on the shots/hole layouts... Newbies are soaking in the 'look and feel' of the landscape more and making judgements about what a disc golf course is (dirt courses). I agree wholeheartedly that we need more beginner friendly pitch n putt type courses. These courses take up much less space and are therefore much easier to armor/landscape for attractiveness and sustainability than 'full size courses'.
One of my first courses I played when I was learning, and the one to become my "home course" for several years, was probably the most played course in the area at the time. It was decently wooded, but also heavily travelled, so most of the fairways were packed dirt from all the traffic. It was also on a creek that, due to the heavy traffic, had some pretty bad erosion. Both my wife and I really enjoyed the look of the park though, even with those qualities. We just loved being out in nature in the middle of a big city.
Some of my fondest memories of DG come from that course too. My wife's, my best friend's and my first aces all came from that course. It helped that only a few holes were any significant amount over 300'. It was definitely beginner friendly, which I think accounted for its popularity more than anything else.
Point is, though, some of the things you mention, specifically compacted, it definitely was, yet it was still both attractive, and fun for beginners.