Many folks are describing, for me anyway, the best sort of course. A course where a 10 capper can get around in par once in a blue moon, but can also tack up a 90. Almost by definition championship courses are too difficult and very, very few are welcoming to the pro and 18 capper alike.
As Tom suggested, often times so many bunkers are put in that an 18 capper finds it difficult to get around. Additionally, I observe high cappers driving the ball off line in the rough, finding it, but not having a place to put it back in play because there are so many bunkers at the landing zone. The only reasonable option is to pitch out. Its deadly boring.
On the other hand, every great course has to have a few holes where its one way or the highwa. This gives low cappers a chance to do their thing and provides a bit of balance to the design. I love it when two long holes are in succession each going in the opposite direction. The par 5 is downwind and very birdeable and the par 4 is into the wind and 4 feels like a birdie.
I spose the key for really great courses is the offer of recovering. So many championship courses leave far too many shots in a dead place in which recovery for the pro is possible, but not so for the average player.
To each is own, but I will take the Pennards, St Enodocs and Wokings over the Carnousties, Troons and Lythams any day.
Ciao