Na Nare Hana Nare is probably one of the best cheerleading animes, considering there is two that I can remember, Arima Yell which completely forgot it was supposed to be about cheerleading. That being said, as an anime, it struggles with stuffing too much in one season.
Na Nare Hana Nare's animation, music and upbeat nature is a treat. The girls look fine, the cheer choreography is great. Every character feels like they are their own entity and have relevance to the world.
The only problem with this show, is because the characters are actually realistic, they all have problems that are entangled and the show respected that enough to attempt to address all of them usually at the same time. It really did its best but the effort stumbled a lot as clearly by the final episode, a lot of new problems were poorly introduced but it was at least adequately solved.
If this show had 2 seasons, this would have been great, but with the 1 season we get, it is a well thought out jumble of a show, that I liked but I know could have been done much better with a few more episodes.