Esther called her children abominations that she wants to get rid of.  Does it naturally follow that she thinks all vampires are abominations against nature?  I think this spell of hers, may not only kill the originals, but in doing so also get rid of all vampires.  I think that the originals and the Mystic Falls clan…

The first time I watched the ending, I thought Ted told his kids "she was never a mother," but what Ted said was "she was never alone."  Right?  
Also, is there any indication from this or other episodes, that Robin does indeed never have kids?  I don't recall Ted ever mentioning them, but that doesn't meet she doesn't…

There was several coffins that Klaus was carting around with Elijah.  So I'm guessing we have at least 2 more siblings to awaken.  I know VD kept it intentionally vague about how many other people were in the family/turned.   I like the above idea that since the curse was bound by Petrova blood, that another sibling…

I asked the same thing last week…I think you're right.  There will be an original Katerina/Elena at some point making an appearance.  Katerina was the first doppleganger, but there has to be an original somewhere.  

Two questions:
  (1) The curse was bound by Petrova blood, which is why Elena was needed to break the curse.  That means that a Petrova relative was in the New World 1000 years ago, right?  But, Rebecca talked about how it was just her family and the werewolves…

So here are my VD questions, that have been bothering me…
(1) Could Michael be Klaus' father?  I mean, they said his family was the first family.  We've heard about the siblings but never the parents.  Maybe he's sickened by what his "son" has become…
(2) If Katerina was the first doppelganger, than that means that she…