I feel the big mistake with this game was making the decks the same. In a way it feels like you took two of the principle mechanics from Card games (Random draws and different decks), and removed both. This made the game into just a puzzle it feels like, as you now just have one big hand. The big thing that random draw does for card games is make the play experience feel different, and instead it feels like you leaned into making it feel very samey. As such, I feel you lost something.