Liverbirdie
Ryder Cup Winner
I love Castle Stuart and the Castle Course (very similar imo, bit weird how there's such a big difference in rankings as an aside), but......
With both I feel you can tell they're new as everything is too well worked out. I.e. The 4th at Castle Stuart where the hole is set up so you see the Castle through the dunes, the 17th at the Castle Course across the bay and the par 4 there with the infinity green with views across to St Andrews etc etc.
You can tell these were designed with exactly that in mind. They are still 2 of my favourite courses but for some reason the fact they are almost too perfect gives them a touch of the "manufactured" that perhaps isn't there with the 1/2/300 year old courses.
Why I would prefer Dornoch over Castle Stuart, New Course over the Castle etc.
I understand what you mean,and it would be interesting to see peoples views in 50 years time to see if they could separate the more traditional courses than the others,after the new courses have bedded in more or are even rougher round the edges.
It would be interesting to see if you could put a golfer on two courses that they didnt know, one from 1870 and one from 1930 and see if they could tell which was which.