Machrihanish probably proves my theory above: Get them off to a strong start and they’ll be so enthralled with the place early on that they’ll forgive any later transgressions.
First impressions count. Most raters have secretly decided what they think of a course by the time they reach the 7th hole.
I like to get them earlier than that.
It was not a planned thing that Pacific Dunes delivered you to that first great view of the ocean at the 3rd green . . . the routing evolved several times before we landed on that in the final version, but clearly everyone loved it, and loved turning along the coast from there to the 4th.
Since then, it's not been entirely a coincidence that most of my highly regarded courses have a similar moment fairly early in the round:
the 3rd through 6th at Cape Kidnappers
the 4th at Barnbougle, Reg's Hut, and the path above the beach
the 3rd tee shot and walk over the dune at Old Macdonald
the 3rd green and 4th tee at Tara Iti
the 3rd green to 4th tee transition at St Patrick's
It's not like I am insistent on making it work out that way -- often it is just an embarrassment of riches, that the land is good enough we can use something like that early in the round, because there's plenty more of it later. But I agree with you that generally I know what I'm going to think of a course after the first few holes, and seeing the detailing of the greens and the bunkers, and sort of assuming there are going to be some more dramatic holes saved for later in the round. That's why I'm not sure I agree about Machrihanish, it doesn't live up to that promise at the end.