Hyouka, though probably by a smaller margin than you. Aside from the unusual tone, it just has a million and one little moments that manage to be great because of how expressive the animation is. Plus I love the ship-tease ending.
I have a list of like seven shows I utterly adore(d) and I might expand it to eight for Hyouka - which would be quite something considering that the list has stood since I came up with it in 2009.
So what tipped you off? My opinion that Kaisei has "height difference moe" when paired with Yasuburo? The relentless memorization of character height stats? Something else entirely?
But yeah, I totally have a thing for short women. I also have a thing for super soft facial features (I'm tempted to say doll-like but that can sound kind of weird), Japanese cosplayer Megumi Natsume is a good example: http://mpzerocos.exblog.jp/9827987/
My taste in body type is a little more variable - while would say I tend towards petite overall, you may have noticed Megumi there actually does have a bit of meat on her.
I've been trying to pinpoint what I think you dislike about Chinami and I don't think its the bubliness, since Matsuri actually had a bit of that. However, similar to Mayuri in Steins;Gate, Chinami has that mix of bubbly and relaxed that can make her come across as if she were mildly stoned, and I'm guessing that might not be your cup of tea.
(Also, not sure if you saw, but I went to a film festival screening of Wolf Children with my anime meetup last week. Afterwards we went to a pub and when I brought up Uchouten Kazoku, a Japanese exchange student we had with us pulled the novel out of her handbag.)
I think the debate rages because Hikari's actions actually do support multiple interpretations. Personally, I'm inclined to interpret him as a rough around the edges xenophobe with a tendency to run roughshod over people who give them the chance to - and the people who do are mostly female. The result makes him come across as a sexist prick and I kind of wish someone would call him out over the browbeating and general boorishness, but I'm not convinced he's truly sexist - ie. targeting the girls because they're girls. He just wouldn't necessarily act the same to a guy because they wouldn't stand for his shit - unless they're like the guy his sister likes and let him walk all over them. Yeah, he did exclude the girls from the discussion of beating up the one guy, but I think that's more a matter of him knowing they wouldn't side with him.
Why were we complaining about one dimensional characters again?
So I decided to actually go look at who the directors and lead writers are on various KyoAni shows:
Kigami Yoshiji (with self): Munto
With Gatou Shouji (the guy who wrote the FMP novels): Fumoffu, TSR, Hyouka
With Machida Touko: Lucky Star
+Haruhi (see notes)
With Shimo Fumihiko: Air, Kanon, Clannad
With Hanada Jukki: Chuunibyou, Nichijou
+Haruhi (see notes)
With Yoshida Reiko: K-On , Tamako Market
With Yokotani Masahiro: Free!
With Hanada Jukki: Kyoukai no Kanata
S1: Ichihara Tatsura
S2/Disappearance: Takemoto Yasuhiro with Ishihara as Chief Director
This makes me quite curious as to what the "old guard" will work on next.
I'd avoid making too much of Hanada being lead writer for Chuunibyou, Nichijou, and Kanata no Kyoukai - because he also was lead writer for the Sola and Steins;Gate animes.