What should have happened..
Damon was freakin right all along. Why did they think they could trust Elijah to kill his own brother? Even Stefan admitted he wanted to kill Damon a bunch if times, but he could never do that to his own brother. They should have just collected Elijah's information and knowledge, and said, "We can handle it from here. Thanks so much." they should have NEVER trusted or depended Elijah to kill his brother. Dumb-ass move to whoever trusted Elijah!
And, seriously Bonnie?? You have the power of 100 dead witches and you can't keep Elijah from running off with Klaus in his arms? I recall Greta used rings of fire to keep humans, vampires, and werewolves from going anywhere, and she only had the power of ONE witch. Why couldn't Bonnie do that? She just STOOD there, giving a little threat to them, like, "Oh hey, BTW, I'll take you both down, killing me in the process. That is, if I ever see you again. So.. Yeah." She let them go when she had a huge amount of power. Whatever.
The show said there's only one way to kill an original, right? Well, I say WRONG! How long does it take to snap a neck? Not long at all. They could have snuck up on Klaus with all the vampire they could get, have Bonnie weaken him with her feisty witch power and snap his neck while his weakened + caught off guard. Then, they could have burned his body until he was just a pile of ash + then scattering the ashes allllll over the place for good measure.
But.. I'm not the show writers. So, it doesn't really matter anyways, I just wanted to vent. I'm really upset that Jenna died.