Whoops, stubby finger syndrome, it was 13 strokes at Bandon Dunes from their short Royal Blue Tees. Men went from par 72 to 59 and women went from 72 to par 65 with the new ratings. Still a lot. I think most people would prefer to play at all tees the same par, with a few exceptions. Those holes are obviously designed to play as par 5 or 4, not 4 or 3, and the shorter tees simply give short hitters a chance to play them in regulation figures.
I am not a handicap guru, but it just seems a bit extreme to me.
For handicapping, except the "net double bogey" stuff, this won't matter at all, as par isn't really a factor in:
(Score - Course Rating) * (113/Slope)
The course rating remained the same, thus, the differentials remained the same.
What did change was how many strokes someone would get. Let's say it's par 59, and the rating is 61.2 with the slope at 131. A 10.3 index:
Old Way: 10.3 * 131/113 = 12 course handicap
New Way: 10.3 * 131/113 + 61.2 - 59 = 14 course handicap
In the old way, shooting net par off a 12 course handicap (an 84) would have resulted in a differential of 19.7. Well above the 10.3. In the new way, shooting net par (a 73) off the 14 course handicap would have resulted in a differential of 10.2.
Of course, under the old system, the course rating would have to be used to adjust players playing from different tees, if that was the case.
I think you all knew this, but I typed it out in case, and for my own practice/benefit. I'm not seeing the real "issue" here. Par is generally maintained across sets of tees, but if the course has a 330-yard par five because the tees are that short (say, family tees or something), a scratch golfer might still play those, and even if it's not a scratch golfer, it's not a par five. It's a par four.
P.S. The slope is 101. Not 131. But you can plug in the numbers and the math will still work out that shooting net par generates a differential that's pretty much your index.
http://ncrdb.usga.org/courseTeeInfo.aspx?CourseID=5776