As far as grinding goes, i can no longer commit that time to it and this game obviously rewards that, moreso if you’re into tiering. Gacha mechanic is whatever, you just kind of get used to it if you dabbled into bandori or genshin impact or anything similar before. My favourite part of project sekai is generally the content (songs mvs etc) but those are arguably available online anyway. The rhythm game mechanic on its own is well done on base but can be glitchy, still an upgrade from similar rhythm games like bandori and kpop superstars