Brett,
Our posts crossed, but see below.
Ken,
I'll go with unreasonable, too.
Going back to the slope system research, I always thought that they felt 2 out of every 3 scratch players being able to make a shot was "reasonble". Their target stats for 20 handicappers were bigger, naturally, to allow 2 out of 3 to reach greens. I always wondered why not 3 out of 4......maybe it takes a green the size of Delaware to get that high a statistical average.
Tom,
Apparently, we are discussing "reasonableness." If it is written anywhere that you have to be able to hit a green from the fw, I think its in the "Book of general consensus" which I think is somewhere after Genesis and before Matthew, but I could be wrong.......
I agree that a tee shot that makes it imperative to play to the far right edge of the fw is as inherently interesting as one that asks the golfer to carry a prescribed distance, or lay up to a prescribed distance or thread a needle between two bunkers. (In essence, you ask them to thread an invisible needle, at least on one side by asking them to hit the edge of the fw through green design)
But, I think most golfers - even low handicap ones - don't play well enough to choose and hits sides of the fw, hold greens with reverse slopes, etc. In my mental images, I am trying to distinguish between designing for Tiger and Company or designing for the typical club champion, who is somewhat less accomplished, not even them and the C class champion.
So, most holes ought to have an advantage from one side, but shouldn't "de-green" approach shots very often, because, the longer both players are "in the hole", the more exciting the golf, I think.
In most cases, I being on the wrong side of the fw and that makes you hit for the "fat of the green" rather than the Sunday pin is plenty of strategic separation between tee shots, given the stats on makeability of short vs. longer putts.
So, personally I think its a matter of degrees. If we are talking a few greens per course that over time, prove that more good players than not can't hit them at least somewhere on the putting surface after a reasonable tee shot, no problem. If it was a course full of them, I doubt many players would have as much fun, theoretical strategy or not. Coming to the "Xth Hole" knowing you simply can't hit the green without two perfect shots isn't as much fun as knowing you can hit it with two pretty good ones.
Strategy with an execution level you can't attain does, IMHO, slide over to penal side of things, and is not much fun. But, we may all be talking the same thing with a slightly different twist on it.