Matt, The 13th was altered the most. The green no longer sits above/beyond the ridge. It sits some 60 yards short of it's previous position. As I recall, the new green is relatively flat and peanut shaped with the orientation str8 on to the elongated peanut. The DZ was also widened and flattened.
I don't buy any argument that DR's proximity to SH is to blame for any of its struggles. As I intimated above, fences have now been mended and new principles are involved.
The club is now managed by Troon Golf. I've heard they are offering quite the deal on memberships. One such deal is... A prospective member brings a group up to checkout the club, Once the group spends more than $1100, that amount is deducted from the 15k initiation.