Chewin: I know, it came as a shock to me too considering I'd been indifferent to her up til then but... reasons. >.> I'll leave that nice and vague since you'll be working on it soon. :3
There's a book I want to write here regarding just how clever HF (and thus the VN as a whole) is but my coffee hasn't got into my bloodstream fully yet and I'm not done the route. But if it keeps up like this? I can say that HF is my favorite route for sure.
ETA: Angel: Nope! I decided to choose to stick with Sakura at that choice. Selfish Shirou fascinates me. 
Oh, don't mention it. I'm not in a position to judge Sakura as a character, considering her minor importance in both Fate and UBW, so I'm just prematurely picking on her for fun (though House said she isn't much of a character in HF either, so my hopes aren't high).
Hope you get to writing something substantial. Looking forward to hear your impressions. Might as well write just one big post about all three routes, both with their pros and cons, once I'm completely done with F/SN (along with something that I have been doing with Fate Zero). We'll see though, hopefully in summer I have motivation to do so.