I'm going to comment on Persian Chameleon's comments;
Like you, I've only seen the semi-translated scans, so I'm judging from quite a limited viewpoint!
I have to agree about Yuki and Kaname's relationship. She's been quite 'uncomfortable' for a while now - what with all Kaname's secrets and hidden past. I'm getting the feeling that maybe in the future Yuki and Kaname might have a bit of a face-off :O but that's me creating stories in my head. And now with Kaname's plain cruelty regarding Aido-san, will definately ROCK THE BOAT so to speak.
[I agree that Yuuki and Kaname might have a face off in the future, as Aidou already asked himself if Yuuki can indeed face kaname as his equal]
On the other hand, I can totally see Zero coming to terms with the fact that Yuki is not an evil vampire and is not the same as Shizuka or Kaname.
[I actually think that Yuuki might end up as the last vampire queen, w/ zero as her Vampire Knight]
I'm extremely interested in what Sara is up to. She is a fantastic villainess and I love to hate her. I want a female villain who can match Kaname in wit and power. Shizuka was likeable but I don't feel like she was evil enough or powerful enough. Rido was your typical evil bastard. And now we have Sara, a manipulative, calculating badass.
[I agree w/ you, I also like Sara. I think Kaname's plan is to ultimately kill off all the vampire ancestos, if not the whole vampire race... so that Yuuki can live safe forever...]
I can see Hanabusa having a much larger role from now on. His father was just murdered in front of him by his idol/hero? I wonder how he will react.
[I wonder about this as well.]
[I think, that the fact that Yuuki answered Kaname's question of how he saw him {that although she promised to be his wife when they were children; the fact that she now knew that he was her ancestor and he lied about so many things; she now wants to just start over again...and even though she offered her blood to kaname, her decision not to treat him the same was as before, ultimately forces him to abandon his dream and to just execute his original plan]