You're thinking Tsurumi's fashion sense is a tad Matsuri-esque?
Ironically that's one of the very few parts of Yahari Ore S2 I've seen - my girlfriend is a big Yahari Ore fan (I watched S1 with her earlier this year), she was over sewing one of her cosplays and wanted to watch it.
And yes, Tsurumi is kind of cute. She was probably my favourite character in S1.
Heh. So you mentioned GochiUsa is the complete journey to moe. I danno... Aikatsu which I'm totally addicted to goes back to the roots of moe to where it originated from - aka shojo. It has the same sort of moe feeling stuff like Cardcaptors, Full Moon wo sagashite etc. does.
That season 2 ED doesn't include the four high school girls though, just the three middle school girls of which two were pretty minor characters in season one. So the season one OP might be a more accurate indication of general cuteness level: https://www.youtube.com/watch?v=Z2ntCDpXJzE
My favourite is probably Chiya, who is essentially the Chitanda of the group (same seiyuu even).