Yikes -- lots of grumbling about alleged criticism of low scoring this year, and no one's really addressed the (mandatory!
) architecture-related question asked in the original post:
"(W)ould a tournament total at or lower than -20 prompt another round of changes at America's most famous course?"
Augusta National has added length to the course in the past, and is clearly prepared to do so again. More rough, additional trees, and faster green speeds are (relatively) easy things to control, and add, if so desired.
The powers-that-be clearly viewed Floyd's record-matching win in 1976 as a one-off, as they kept the course at under 7,000 yards and maintained width for another 20-some years; not so with Tiger in '97. Dramatic changes came not long after his 12-stroke, -18 win. At what point do the Augusta National tournament folks see the need for more changes to the course, and make them? That question is -- based on past history with the club -- surely based more on scoring than, say, time.