Alas, deep wet rough will not completely offset softer greens as the guys that are playing well will hit more fairways and have less problems with their approaches.
Also, softer greens will make the putts from above the hole - even on #'s 12 and 15 - less dangerous.
David Graham's U.S. Open record could be in jeopardy if the weather forecasts are correct - although not by much. The short par 4's he played are still the same (#'s 1,7,8,10,11), but three of the par 3's (#'s 3,9,17), one par 5 (#4) and the longer par 4's (#'s 5,6,12,14,15,18) are where 95% of the extra yardage has been added. Only #'s 2 (par 5), 13 (short par 3) and 16 (formerly long par 4) are, essentially, the same distance as 1981 and, hence, will play shorter.
Also, I believe the new fairway bunkers on #'s 2 and 16 will create a challenge.
The players are better, but 10 of the 18 holes have considerably more teeth and the other two have new bunkers that could prove to be problematic.
Finally, damp, wet or (especially) bone dry, all 18 greens are still faster than 1981 and being above the hole will still be highly undesirable.