Well, I just finished the Fate scenario, and it was... decent, but Saber isn't my favorite character. And yes, Shirou is still kind of a tool. He still did some pretty badass stuff in the end, there, though.
I will say that Shinji is one of the biggest douchebags I've ever seen. Seriously, it's rare that a fictional character has made me want to beat the **** out of them this much. Everything about him pisses me off. And Shirou going "Oh, that's just how Shinji is." was one of the biggest points at which I wanted to slap him. There is no excuse for him acting that way. None.
What did surprise me is how awesome Rin Tohsaka is. I'm not normally one who enjoys the tsundere archetype, but she's actually really entertaining.
I guess the next route to play is Unlimited Blade Works. More Archer, hooray!