It's a solid 7/10 imo. It's got a fun core gameplay loop, good sound design and a decent story, but it never gripped me. I'm up to chapter 9 and dropped it for a fifth playthrough of FE3H (which I've in turn left halfway through for DQXIS). The battle system doesn't stand up to the ridiculous fun that Bayonetta provided imo, but it is a great start and I hope they continue to build on the series.
Yeah the gameplay is less fun than Bayonetta, but I still found it fun and I can see a lot of potential on the future. And the last part of the game is better. Once you unlock the super Saiyan mode and the story really takes some twists it's great.