It is probably doubtful that many people will open the thread on level tees since they believe it has played out, but I wanted to add a quote from a master designer who is respected by nearly all students of golf architecture.
Some have questioned the importance of level tees and even implied that the masters of design from the Golden Era were silent on the matter.
In "Golf Has Never Failed Me," Donald J. Ross states the following on p.126 --
"There are two, and only two, inflexible rules for layout out a tee. It should be big, and the top must be PERFECTLY LEVEL (my emphasis added)."
If someone can provide other master architects who either advocated unlevel tees or believed they are not important I would hope you could cite the reference.
I believe it's fair to say that Donald Ross knew something about golf design ... clearly more than me and I dare say countless others.
Ross goes on to say ... "How pleasing is the impression of a course when the tee is in the pink of condition. What a delightful intimation it is of the joys the course has in store for us." I could not say it more eloquently or straightforward.
Now I just wish all these clubs who spend $$$ on all the other gigor would direct their superintendents to do what clearly is a priority but is clearly lacking on too many courses.
Ross clearly understood the nature of what tees are and what they must be. When ground is not level it is by Ross's definition not a tee. I agree completely ...