Garland,
The old way of designing holes was to put all tee balls in the same LZ. Longleaf and other tees place them proportionally, i.e., hole length is based 150/300 yard drives, or forward tees about 50% of back tees, or 400 and 200 from the forward tees. BTW, I always did that regardless of the fact that the USGA has set minimum length for par 4 holes as 205 (?) for women. Senior men have been playing shorter than regulation par 5 holes for years and no one got up in arms. Ask a woman to play a 199 yard hole (that she cannot reach in one) as nothing but a par 3 is ridonkulous.'
As to having less spin, all true, but as I mentioned above, there is no perfect solution nor is anyone trying to make skill equitable. We who advocate forward tees are just trying to make the game fun for those who play. And, of course, you are just stretching to make a point with "new forward greens". Why would you go to the expense of shortening a hole on both ends?
I grant you it was Niall's post that suggest that old people ought to be shamed for their ego of wanting to play golf at reasonable lengths. Hah. At the time I figured answering both with one post would save me time, but that isn't how it works around here.
I agree there can be joy in longer golf for oldsters. And, I don't think many are talking about mandating anyone play anywhere. If I want to go play longer than normal when I visit my son or play in his member-guest, I am free to do so, and due to social conditions would probably enjoy it, including having my handicap adjusted appropriately so I still have a chance to win something (or avoid last, which is my typical tourney goal) But, I know (as a golfer) that doing that all the time is not as fun as playing at 6000 yards or so and hitting greens in reg.
And, so many players do play match play, i.e., them against par or them against their personal best. So, even in a stroke play format one day, mentally, even multiple golf games are going on in some heads (and for real, as in side bets) Either restricting tees to 2, or expanding them to 7, really doesn't affect the basic joy of golf for everyone, every day, etc., but it does give a subset of them the option to enjoy reaching greens in regulation. You keep saying there is a lot of joy in hitting shot after shot down the fw, but to most, hitting the fw from the tee and hitting (or nearly so) the green have a lot more intrinsic value than advancing one down the fw 130 yards or whatever. I think it is hard to deny that statement, no matter how hard you try.