Forrest
You have mentioned a few times about certain designers and companies influencing perceptions. I don't play nearly enough top designer courses to worry about the architecture prestige factor. Hell, when I bought the Confidential Guide in Hay on Wye for £8 I thought this was a bit pricey for a used book from a guy who doesn't even work in the field! That was six years ago. I had never heard of Doak, Coore & Crenshaw etc. etc.
I like the idea of your scale. Mine is somewhat similar being a max of 26. I have not played a course that I gave a 20 yet. 15 is certainly top 25 material in the UK. I still spose I am waiting for that one course or two that will blow me away in every way. It is out there, perhaps not yet built, but I am certain my best golfing experience is on the horizon.
Ciao
Sean