True, it could've been better, but it could've been much, much worse. I liked it, the only thing that I think they half-assed is after they sunk Kisaragi. They only had an episode for mourning, now I'm not saying they should've made it depressing or anything, but considering how much Mutsuki liked her she rebounded too quickly. At least towards the end of the season her fears came back, but still could've been handled better.
Also Ooi was really annoying. Hopefully they'll do a better job with her and Kitakami in the second season and they'll take the plot line they hinted at, namely how Kisaragi became the Airfield Princess (or at least it was hinted that she was)