Why Grimoire of Sacrifice Has Been Removed?

Blizzard says something to explain the reason why they remove the Grimoire of Sacrifice, and here is the original post:

We were unsatisfied with Grimoire of Sacrifice for Demonology. Fundamentally, it did not fit Demonology's theme to sacrifice their pet, full time. We had toyed with ideas where it acted as a temporary cooldown for Demonology, but have decided to replace it with a new talent, which is more theme-appropriate, and fits well against the competition in that talent row.

■Grimoire of Sacrifice is no longer available to Demonology Warlocks and has a new talent, Grimoire of Synergy in its place.
■Grimoire of Synergy: When the Warlock or their demon deals damage, there is a chance to trigger Demonic Synergy, granting the other one 15% increased damage for 15 seconds.
Here, if  you want to buy WoW items, then click here to find the best.



From:http://www.raiditem.com/shownews-836.html