Never one to pass upon an opinion that matches mine, I'm ready to agree even with Jessi:

I have to say, though, that I sympathize with Saku. Really, Mihoshi isn’t the type of girl with whom I'd like to spend my time. She’s a bit like Haruhi Suzumiya in that she’s enthusiastic about her organization and isn’t about to listen to anybody trying to oppose her, but Mihoshi otherwise just seems like a cheap rip off — a clone created to cash in on the popularity of the character type. Saku unfortunately softens up too quickly, as I stated before. I feel like he should be Mihoshi’s foil; an opposing personality in contrast to her overbearing and over enthusiastic nature. Unfortunately, he withers up and climbs on board too quickly to serve that purpose, and ultimately seems less interesting for it.

My post on the topic wasn't as measured, sadly. I took it more personally.

BTW, I explicity disclaim any agreement with other parts of Jessi's review:

Visually the show is above-average, with consistent and fluid animation []

Most certainly not (see the screenshots).