Story: Well, this season was mainly about the development of the idol unit as a whole -- the producers evidently decided to ditch individual character development, and emphasized on the development of μ's as a whole. This was an intelligent gamble -- after all, going deeper into nine main characters' backstories would prove to be detrimental to the quality of the anime, causing it to be melodramatic and boring. It was a pleasure to watch as μ's grew and cruised towards their final goal -- to win the competition -- although some parts could be further elaborated. Overall, the story in Season 2 was enjoyable and rather well development -- a massive development from the mess in season 1.
Art: This is mainly personal preference, but I really love the art used in Love Live (even for Season 1). How the characters are portrayed, how the environment is drawn, etc. -- all these are very well done, and I am unable to pick out any flaws or problems with the artwork of the anime.
Sound: Now THIS is the defining factor of Love Live. It might be a given for idol animes to have good music, but Love Live's music is beyond fantastic. Almost all of the music in the anime is brilliant, (with a few exceptions here and there) and these songs are also used to great effect -- they have proved to be superb in amplifying the atmosphere and mood present in the scenes they are deployed in. Season 1's music is already good -- but Season 2 takes it to a whole new level. Each new song just has this ability to draw you in -- no matter how much you listen to it, it never gets boring, but instead provides that spark for you to start twitching/rocking to the beat. My personal favourites: Dancing Stars on Me! (S2), No Brand Girls (S1), Snow Halation (H2)
Character: As mentioned before, the developers decided to sacrifice the development of the individual μ's members to focus on the development of μ's as a whole. Thus, character development is certainly lacking and can be worked on, but I believe that this intended neglect has allowed for the story to be much more enjoyable and appropriately paced.
Enjoyment: I enjoyed watching Love Live's Season 2 very much -- μ's jovial nature just seems to draw me in, and create that elusive smile on my face. Throughout the entirety of season II, I have thoroughly enjoyed the anime, and have spent most of my time watching it either grinning stupidly, or even giggling. This is perhaps the anime I have enjoyed the most -- I simply love the jovial, carefree nature of μ's and how the anime was developed.
