Brett
I more or less am the sort that is looking for unusual holes and will forgive the odd stinker hole. While I like TR, it rides a fine line with some holes and long, narrow green concept. Painswick is another example of the type. There is enough cool stuff to forgive the poor stuff. I don't have a formula or specific number of holes/elements which would make me dislike a course. I did play Cullen last year and it's many mundane holes somewhat spoils and the experience. As you explained about TR's 17th, the course needs an edit to something less than 18 holes. There is too much mundane stuff to keep the round moving with 18 holes. The other option is to systematically improve the holes, if the club has dosh. There is a sleeping giant there either way.
Ciao
Sean,
For clarification, do you mean "wide, shallow green concept" rather than "long, narrow green concept"? I ask this sincerely, and btw, I haven't played at Painswick.
I can't think of a green at TR that is especially narrow given the club that you are hitting on the approach. 3, for instance, is an extremely deep green, but you're hitting a short iron in. The 9th green isn't long and narrow because of the angle; the issue there is going thru the green onto the hill, or not having enough carry to get up there in the first place. 16 might be considered somewhat long and narrow, though not unusually so, except that there again you are hitting a short club in. The front of 18 is narrow, I suppose, but there is plenty of width in the middle of that green, and room to miss on the left. Those are the only greens I can think of that would fit the description of long and narrow.
By contrast, 1, 6, 8, 11, 13, 15, and 17 would be what I would consider wide and shallow. The rest of the greens are, at least to me, pretty "standard", at least in terms of width and depth, and on the holes where you are hitting a longer club in, there IS a pretty clear place to miss and be ok. I'd put 1, 2, 4, 5, 10, 11, 12, and 18 in that category. That leaves out 7; that green is huge and difficult, and without a great place to miss and be ok, but it's a hard green to miss completely.
There are a lot of courses, great, good, and not so good, where the pin location might make a difference of several clubs on an approach from the same spot; Streamsong Black leaps to my mind because I just played it in November. In fairness, I don't think TR is one of them; the big greens there are wide, but not deep. All of this is important, and ties into the relatively low course rating and the relatively high slope rating. Good players who are playing well don't have much trouble hitting greens and even getting close at TR; bogey golfers who can't hit their intended line can easily take 40+ putts in their round.