I intend to put up a user review but I don't want to put final impressions down. Because the game is so fresh I wanted to put something up for Dooders who might be looking for something.
Probably a 4 in the end. Played through all songs, part way through Story Mode, 4:19 with the game total.
Persona 4: Dancing All Night is a fantastic game for people who like the Persona series and/or people who like rhythm games. There are some problems I have with the design of the game itself since they changed styles (and the team) from the Project Diva style to this circular style. Call me a traditionalist but I believe charting the notes in any other way than a direct bar like DDR or Rock Band will provide an inferior gameplay experience. That holds true here but I will say that they added a bunch of options and modifiers to make it so that you can find something to help you read the weird expanding notechart of this game.
It's understandable why they would do this because while Project Diva did a better job creating a more unique gameplay style, it still has the same issue of direct bar games where you don't notice ANYTHING but the notechart. This circular style does exactly what they want by allowing/forcing the user to focus on the center of the screen for the notes but also focuses on the background animations as well. I've seen (and enjoyed) more video from this game than the 12 year's I've been playing the beatmania series. So this compromise in gameplay seems to make up for it by allowing the player to actually enjoy the visual design of the game while actually playing it.
Like all Persona games, it's soaked with style, character, and fantastic music. The characters all dance like you would believe them to. For example, Chie dances with a Kung Fu vibe while Naoto has a more precise ballet style. The remixes of the music are almost all home runs and there's a variety of musical genres that I wasn't expecting although the bulk is what you expect. Story mode is 99.9% visual novel and... It's not my cup of tea but whatever. Only a small amount of content is locked behind it's completion. The setup is kinda interesting with a view of how the business of idols work in Japan.
I would say it's not an instant purchase for most people. It took me about 4 hours to run through everything with a couple replays of favorite songs on hard. It's a good game but the notechart prevents me from just suggesting it to everyone. It's better if you are a fan of Persona than a fan of music games because of the decisions they made with the gameplay. This is 100% fan service but god damn it's great.
Also, I’m with Jeff. Miku should just say out.