I have not read the light novel, but if this season is even a little bit faithful to the LN, then the writer has some serious problems. From what I gather, the first two seasons cover eight volumes of the book. EIGHT volumes, and the only real character development takes place at the end of season one and the end of season two. 25 episodes is too many for your characters to barely change and grow.
Another problem, in my opinion, is that this show is a harem, yet its pretty clear which girl the creators favor (Sena). It would have had a lot more heart if Kodaka had connected with all of the characters, especially Yozora. The show should be about their relationship, whether or not it becomes romantic or stays platonic.
Another issue is that the finale really feels like just another episode. I understand that they just adapted what was in the books, but to end it the way they did, which no indication of a future season or at least an OVA to tie things up, is disappointing, and a problem I think a lot of Anime has lately.
The one good thing I can say is that there doesn't seem to be any unnecessary nudity, especially when it comes to the younger characters like Kobato and Maria. Though I watched Funimation's version, which I believe is based on the already-edited Japanese broadcast.
If you watched the first season and really enjoyed it, and you have the time, give this a watch. There may not be a lot of plot or character development, and it may feel like a rehash of the first season a lot of the time, but there are still some good laughs. Otherwise, wait until they (hopefully) announce a third season or OVA that brings the series to a satisfying conclusion. Volume nine of the Light Novel is out in Japan, and from what I've heard, there is way more plot and character development in those first few chapters than there is in the rest of the series.
