I can't say I'm surprised. But this time was they used a special council of hand-picked experts to decide this, so I'm gonna follow that decision. Besides, it "mixes things up", so to speak. |D
Anyway, this decision would last until Gen. V comes out. By then, some new threats and checks will be presented, so Mence might come back.
Luckily, I was planning for this, so I've already got a Dratini breed. |D