I have always argued that, in terms of rock n' roll music, nothing is truly original after bands like the Beatles, Beach Boys, Rolling Stones, etc. Meaning.....that when contemporary bands think they have created something original, it is really just an amalgamation of something that has already been done by those preceding bands.
To be truly original in rock n' roll is nearly impossible and that is why there are not many interesting rock bands today.
As far as golf goes, it is largely the same: best case example being......
I have always thought that the influence of human civilization within a golf course (ie fences, roads, stone walls) are interesting and make the game feel like it is still "playing through the rough." Certain new courses incorporate these elements. However, if you were to design a hole that plays over an ancient stone wall to an obscured green (and there hadn't already been a #13 at N. Berwick) it would probably look "really original".
Are there really original ideas left in golf? certainly!
Did Nirvana sound "original"? Yes!