Jonathan,
I have played Linden Hall a few times, though not recently. It's not a bad course at all, as you say a nice bit of land and some very enjoyable holes. Certainly a much better design than either course at Slaley Hall, in my book, much better than Matfen Hall or Longhirst Hall and much, much better than Ramside. The last couple of times I was there, however, conditioning was poor enough to lessen the experience. I guess I should get up there again some time to see how it is now.