Coming back to the quality-question.
I think it all depends on how you define "quality".
If you mean "production"-quality, then IMHO there isn't really much change, besides some sets produced in China.
In my experience only twice I had bought a set with a production error; once in the early eighties and once a year or so ago. So, in my own experience, there hasn't really been a change.
If it comes to the quality of themes, I guess that's a matter of taste. Fact is that lately the details on the klickies and items are increasing. But I am not sure that that is quality. I think you can just as easily make a point that too much detail is killing part of the playability.
Personally, I think that in general the production-quality is more or less the same as it always has been. Although some "bad apples" have been there as well. All the other points are more or less a question of taste. But then again; that's my own 0.02 cents worth ...
... As regards a "golden age of Playmobil", this will vary from collector to collector not so much on a basis of quality as on items offered and "nature" or "personality". I know Bogro and many others would say a golden age was the early years of Playmobil with its extensive mediaeval range of buildings and figures. ...
I wouldn't dare saying that that was
the golden age; but it definitly was my Golden age of Playmobil
But more because that was also the period I loved to play with it as a child and had many, many a happy adventure with them ... (a lot of them on the high seas as well
)
Bogro