the gameplay is pretty fun, good graphics and effects and alot of mix and matching characters and weapons and passives to theorycraft and minmax builds and stuff, and its fun to see big numbers from your builds(although alot of that is taken out by being behind jp). The gacha is generous enough, you can get a good number of 5 stars and you can do most content without perfect teams.
downsides are, you have to do dailies even if you want a break but thats all gachas, and the grind for gear is on the high side. The story is also pretty bland and not memorable, including events, so new events arent that interesting. Also the art is very safe imo, most of the characters are just kinda cutesy and youre not gonna be super attached to them because their hot and stuff which is a big draw for other gachas imo.