Base song library is atrocious if you don't want to spend money for harder songs, and holds up very poorly to the PS4's equivalent Drum Session. You can't customize your don or turn off skills on other selectable characters if you don't want to play with buffs.
I give it a pass for reintroducing me to rhythm games and one of the 2 first English releases since Taiko Drum Master in 2002. Later updates also eventually brought online 2p and matchmaking mode which was nice. Don't play with an unmodded tatacon, and don't use motion controls if you're actually trying to get good

Has a special place in my heart so it's hard to get mad at. Even with the intent as a brutal zero guidance survival strategy game, I think its become so bloated with new mechanics and content it needs a serious rehaul with its approach. It feels like outside of veteran players who've had the chance to get used to difficulty changes and learn the game in lighter versions, it's now unnecessarily harsh to the point of demotivation to introduce new players without the help of a wiki or guide, let alone integrate exploring whatever new things gets added each update
It's incredibly fun for goofing with friends though