Can't say I disagree with you about Kiritsugu. Because I don't.
To be perfectly honest, I don't like him either; I love Irisviel though. And I hated Kayneth with a passion, so seeing Kiritsugu take him down was immensely satisfying.
As for Kirei...well, the difference between you and I is that I've seen
Fate/Stay Night. I'll say no more here as I don't want to ruin
/Zero(Which incidentally I am preferring to the old F/SN anime) for you, but...well, you'll see.
However, if you don't want to go through the entire anime(which follows one of three possible routes in the original VN, the "Fate" Scenario), I'd recommend at least checking out the "Unlimited Blade Works" movie (which follows a second route, which gives the movie its name). Personally, I preferred UBW to the series overall, but there are certain aspects of the series that I liked.
There is a third F/SN scenario, "Heaven's Feel", which I hope we will eventually see animated, mostly because Rider gets a significantly larger role than in either of the other two routes.
Now then. On to my much-belated thoughts concerning this latest episode, which owing to life getting in the way I was not able to watch until today.
- My initial impression of Sola was that I didn't like her. At all. She came across to me as an arrogant, self-centered b****. As of this episode's viewing, I have to amend that: she's an arrogant, selfish, PSYCHO b****. And I hate her guts. I mean heck,
torturing Kayneth into surrendering his remaining Command Seals? And threatening to amputate his right arm? That's...I never thought I'd say this, but I feel sorry for that poor bastard. She's probably the only Fate character I hate worse than Gilgamesh or Kirei, and I thought that was impossible.
But enough about that particular whackjob. Kiritsugu...From a logical standpoint he's right, but I still think it's awfully heartless of him to evidently not give a damn about Caster's evil shenanigans. That being said, he has a point; what if Lancer HAD attacked? I mean, I know Saber's got this whole Knight chivalry/honor code thing, and evidently Lancer does likewise, but what if he hadn't? That's an awful risk to take.
We next move on to that hilarious Large Ham, Rider, whose quest for a pair of pants has apparently ended in success. His antics never cease to amuse me. Additionally, Waver finally does something that demonstrates competence. I'm impressed; and apparently, so is Iskander.
The next scene, in which they find the place where Caster was engaging in his hobby of murdering children, was rather more disturbing; though the fact that Assassin is revealed to be alive to at least one of his enemies was interesting.
My favorite part of the episode, however, was its first few minutes, and the brief overview it gave us of the tragic story of Diarmuid Ua Duibhne. Damn, I want to read the Fenian Cycle now(The Irish mythological cycle that features Diarmuid; I'd also like to read the Ulster Cycle, which featured Cú Chulainn, aka F/SN's Lancer)
The preview for the next ep though...I'm kind of dreading what happens next...though hopefully it means we'll see Berserker again; that dude kicked ass.