Havlat to Scott is a drop in productivity. I am laughing even harder at FF. Stuart to Tennyson may be bad as well. And the loss of Burns to the forward corps to almost exactly replace Boyle on the blueline is another drop.
I am at about 75-80% for predicting standings point changes for magnitude and direction. My misses frequently happen because of surprising youngsters and new coaches (sometimes ACs).
What's your numbers with a healthy Hertl for 80 games? Might help...