Sean,
Here's the thing... I could even make an argument that it meets the criteria for a 7:
7 - An excellent course, worth checking out if you get anywhere within 100 miles. You can expect to find soundly designed, interesting holes, good course conditioning and a pretty setting, if not necessarily anything unique to the world of golf.
However, given some routing oddities, the completely featureless greens, and a couple of similar holes... I felt it was just missing a little too much to be a 7.
As a 6 though, it easily qualifies in my mind:
A very good course, definitely worth a game if you’re in town, but not necessarily worth a special trip to see. It shouldn’t disappoint you.
If you are in Pullman, it is indeed a must play. Its not a world beater course, but there was nothing about it that disappointed me. Even driving the 100 miles from Spokane to see it didn't bother me either. I will continue to play it at least twice per year.