Look how excited everebody is about seeing the last in game cutscene.
In my opinion they should of made the last boss extremly hard, or almost impossible to beat, or maybe requiring you to do something hidden in the game like obtaining the scepter of aq was. so that people would try at him for months before eventually downing him.
And only after few months before the new expansion, he should be opend to the whole public.
Right now not knowing what will happen makes everebody excited and everebody wants to raid and have fun at trying him.
It sure beats the one year of dragon soul when youd just log in to farm the same bosses you did for the last 11 months.
I mean its just ONE boss at the end of an expansion, its not like its a whole raid tier or w/e.