To be fair,
Its waaay too early to make any judgement.
I suggest you listen to the Danuser interview:
Danuser Radio Interview - Community / General Discussion - World of Warcraft Forums (blizzard.com)
That actually goes over what the lore will be leading up to the end of SL and the start of DF.
I loved the features they represented, but we will all see if the expac will be a good game.
I for one am optimistic.