Edit: Doesn't matter what i said but...
Over at
EJ the guy doing the spreadsheet has updated it and mentioned that vengence was reduced by 33% from the tests hes done himself.
He also said that due to the vengence changes it also de-values the stat weight of exp and hit and crit and haste are now ahead. He didn't give an exact number to hit for expertise and hit (my excel isn't working so i can't use the spreadsheet atm) but he did say that even 7.5% seems too much.
Expertise and hit still remain the best way to increase dps as before.