I liked it. s3 never
I know it's better if things don't drag on forever but still.
First season of Chuu2 was amazing. The ending and what not were well done. All season long Kyoani had lulled us into this sense of false security by tricking us into thinking this was just a show about cute girls being chuuni. The whole thing about her dad and what not had all the more impact and even had some amazingly well animated abstract scenes if I remember correctly.
It's not bad if you just want more of the same but it feels like more of the same. The relationship between the MC and Rikka goes into development hell and it feels more like some guy babysitting an autistic kid than an actual couple. Mori Summer and Mjolnir Hammer have more chemistry than the main couple.