Before or after the incentives were raised?
The increased incentives were a means to combat the symptoms. You never ever do that unless the symptoms make it impossible to deal with the cause.
If someone has pains in their arm muscles due to inactivity, you give therapy to the arm so it can move better, unless the pain makes it impossible to apply therapy to the arm in the first place. In that case, you treat the pain first and then apply therapy to the arm.
Blizzard confused the cause and the effect. The effect is that Alliance never really enabled WM in the first place. To counter this effect the incentives were increased so that Alliance would enable WM.
The problem is that by only treating the symptom, they will show again, in this case, Alliance turns it off after they receive their incentive because any longer is seen as pointless.
The cause of the symptom has never been treated so the symptom, even if treated, will return again and again in some form or the other.
Activated Racials can be used to give an edge, they can also be used in a synergizing capacity.
Say that we both have a trinket that gives a proc chance of increasing AP by 1000. They both proc, They can activate Berserking and now they get a 15% benefit to 1000 AP I can never get.
There would be less of a problem if those activated racials had a ppm that gave equal benefit as the activated one. So Berserking has a 3 min CD. If it had a ppm that totally gave the same benefit of 15% Haste over ten seconds it would better.
So, for example, Berserking: Increase the Haste value of the user by 15% for 2 seconds, 1,66 ppm.
The benefit would overall be the same and it would no longer be possible to stack it other than trough luck.