It would be great, but a baby in the Originals and The Vampire Diaries ? I really don't think so ^^
I think he is "alive" like Katherine became :)
Davina and Bonnie don't control their magic ! Bonnie almost killed Elena without wanting it and Davina made her room tremble. Both of Them doesn't control entirely their magic.
Davina is so powerfull with the power of only three girl because their death were very violent (killed by a member of their own clan, betrayed by their clan and their family by telling them that they won't die), and because it was a part a powerfull rituel, The Harvest. Their girl were supposed to be sacrifice to get power to all witches of New Orleans for 300 YEARS and to have an important link with their ancestor! Wich make a lot of Power ! So my theory is that Davina has the power of their three violents death, the power given by the Harvest to though three girls, and she is now fully bound with their ancestors.
But with the unlink rituel that Davina performed in 1x06, Bonnie is clearly more powerfull, being abble to defeate the spell that Esther put on the Original easly. Whereas it was difficult for Davina to perform a version more easy of that spell. Bonnie was also abble in 4x22 to perform a link spell and to modify it on command.
So I think Bonnie is more powerfull in matter of magic's practising and control. But in term of power it's hard to found who is more powerfull.
I don't think Qetsiyah is the reason of Bonnie's death. I think it's a plot hole, and that the spirtis killed her.
Maybe the spirits didn't alowed her to chanel them because she rejected the spirits by using Dark Magic and then Expression (said by Sheila in 4x01 and Aja in 4x17). When she involved them in 4x17 to begin a spell she felt a lot of pain. So maybe when she tape in the spirits' magic to cast a major spell like resurection, it was so painfull that it killed her. After all Bonnie betrayed the spirits by using other type of magic like expression wich is really much powerfull, so maybe they did'nt want a so powerful wich on earth so they killed her.
But the reaction of the spirit about magic is very weird : In season 2, the witches of the burial ground didn't want anymore to Bonnie chanel them because she abused it. But in Season 4, they didn't want Bonnie to use other type of magic like Dark and Expression... --' WTF ? So what she could do ? Keep going using personal magic and get nose bleed ? Not realy... :/
Maybe is life would still be bound to Elena, along she is still alive (or actually undead), he would be immortal, at the seconde where Elena would died, he would died.
But if Elena dies and Alarik is bring back to life, like Jeremy, after her death. I don't know what it would be. Maybe he would be trully immortal like Silas.
Bonnie knows that she's a witch only for two years !
Whereas, Davina knows that probably since she was born, due to the fact that she is born in a witchs' coven !
Moroever, Bonnie was abble to take down Klaus with exression when she didn't really trust her power. She took him down in 4x12 and she gain confiance in her power (wich enhance them) only later in 4x19, by casting a locaor spell on silas without anything from him.
So Bonnie is probably stronger that Davina.
About the fact that Klaus never mentione Bonnie it's because it's two different series. Klaus never talk about Caroline, or Rebekah about Matt and Elijah about Katherine. The Originals nerver said that actuall they are not the first realy vampire in the entire world, because there is Silas !
Now we know that Davin's strengh come from the sacrifice of three witchs, wich she gane power, power that was supose to restore Ancestral Magic for 300 years.Its definitly a large amout of power. So is Davina chaneling all the power of ancestral magic when she is using magic ?
So with that power, Davina is stronger that Bonnie. But that power is temporable. So in a few mounth, Davina would lost all her magic (incluing personal magic), and wouldn't be a witch anymore. And Bonnie would be stronger than her (if she is resurected)
Or maybe if the love triangles "Damon-Elena-Stefan" and "Damon-Katerina-Stefan" is a history repeating ? If Amara was in love of Silas' Brother and full everyone to gain Immortality to Silas (who gain it from to Qetsiyah) and then give it to silas' brother. Damon ancestors would become and immortal by dying with Amara's blood (if it work like vampires). It would be a little crazy but interesting ;)
I wrote this ^^ I just forgot to log in ^^
I don't think so neither.
But sometimes TVD is a little crazy ^^ I found ridiculus that Stefan was Silas' doppelganger. It was to much but they justify it very well so maybe they have a good idea to put a damon doppelganger ;)