The cats are interesting, but it would have been nice to see more of them around the game. Other than the concept of black cats being unlucky it didn't feel like there was any reason for the game to use cats specifically.
It really feels like a player can get "unlucky" while playing the game, but it would be nice if the player had the ability to draw more cards to let themself dictate their own risks. I had a round of drawing 5 cards for a total of 7 hand value and was forced to stay when I really wanted to be able to dictate my own stopping point.