Pat, you premise to protect par as the reason for not providing teeing grounds to support a golfer skill levels seems small minded, with some out of date connection to the past.
For the golf world that I live in, encouraging more people to play a game, especially on courses that require decent carries off the tee, offering the game of golf as a sport or pastime that is first and foremost fun to play should be every golf clubs goal, if they do in fact believe that they can impact the growth of this great game.
What junior, or family, or aging golfer that has lost much strength but not love of the game, can play PVGC, a course you evidence as a reason not to install extra tees.
Absolute beginners, getting to know the game, should be encouraged by their teacher, coach etc to drop their ball at 150m markers, to actually play a full round of golf on a short course, then a set of markers at the beginning of the fairway, doesn't hurt anyone else playing the course, and saves them looking for balls off the tee and slowing everyone down. This is where I think the additional tee should be added, and I like the idea of calling it the 'family tees' covers a nice broad demographic.
Pat, is there a connection between your reasoning above and the handicap system in place by the USGA?
In Australia, we mostly play comp as I'm sure you know, where a fair handicap is very important, but a golfer playing off the members tee, will never have to compete against another golfer playing off a front fairway tee. So why does it matter where they play from as long as they are enjoying this great game?
I am in the camp that believe that we all those of us who love the gamenhave a responsibility to grow participation in golf in any small way we can, and not just leaving it to the governing bodies.
Golf should be fun and enjoyable, the chasing of a score comes later, and I think the small score card the club above produced for those short tees would make for a lot of fun - as you say, as skill level increases then golfers can always move further back to meet their skill level.