Draglade is a bit different. Sure, you've got rhythm, but the music is sort of made in a way that Ontamarama was made. It's pretty drab, and the amount of difficulty in landing all "Cool"s just ends up annoying a lot of people in the end.
All in all, it could have been decent. It could have, had it not screwed its storyline (typical generic storyline, absolutely no humor or attempts at making heavy twists) and music (typical_battle_music.mp3, etc, etc).
You haven't missed much, trust me. Ouendan and EBA are just about as good as it gets for a long while.