Yuuki was ready to become a Vampire/level E for Zero, to share the same destiny than Zero (what is this if not love? pure one?).
Then, yuuki had two options to save zero:
1. to kill kaname because kaname let his guard down only in front of her
2. to sacrifice herself
Yuuki chose the second one. that was her only option to save both.
She hasitated when Kaname proposed to make her a vampire.... I would say that inconsciously Yuki is very much more attached to Zero than what she realises by herself for now.
When kaname asked yuuki to spent her eternity with him, yuuki did not hesitate to answer yes
at all. If I remember correctly she started to cry, because (it was explained later) she never thought she will hear these kind of words from him.
Kaname could have killed Rido when he was a reborn young child.... he didn't. He let things happen and then appear as the saviour; but is he composing with what he would have liked to do and he didn't, because he wants to see how far things can go?... Yuki has a pure heart, the real pure one; there are things she would do differently, and things would not be so violent perhaps.
Kaname couldn't kill rido because rido is the vampire what awakened kaname the ancestor from his slumber. it was like rido was kaname master. even if he hurt rido, he couldn't apply to him the fatal wound.
The same thing is with zero and shizuka. zero mangaed to shot her, but no matter how much he would have tried he couldn't gave her the fatal wound.
I belive this is explained somewhere in the manga. You can search to convince yourself.
I do find so Zero and Yuki far more interesting, they don't know where they go, they build, fight for their destiny; they don't try to control others, even if for good.
kaname and yuuki pair don't want to control others. kaname don't want to control others, he want just co-existence. a world where humans are not seen as merely food.
Zero giving blood to Yuuki is one thing... but taking advantage of her and shutting down Cross Academy isn't gonna solve problems.
Agree with you. zero offering his blood to yuuki sound more like blackmail: drink or I will shut down your academy.
Kanames goal, at least his new one is not peacefull co-existence, it is forced co-existence, if it was peacefull he would not be killing people who would disagree with it.
WE still don't know why kaname decided to do things like that. Even if in manga it is not explained very well, we know, some purebloods made some moves to obtain something.
Until we don't know why kaname is doing this (the full reason) we can't blame him.
We just need to be patience (for several months) and wait for hino to explain.