a few small ideas are to have advantage cards cost more than just one advantage. then have some of the chips like the pepper give you more than just one advantage. that would not only make things more balanced but also add in a whole lot more strategy into the game. the other is to maybe not make the whole game pixel art and maybe try doing something similar to how celest did its art style. maybe make the chips and IDs a more simplistic look while having the cards look hand drawn. then throw in some small effects some more character dialog then the game is finished.