They should make he gold boxe's values increase depending on what ranks the plsyers are in the battle. Because when you're at the highest rank, 1000 crystals really won't get you anywhere...
The new update is basically a money grab for the game. Losing a rank because your ninja died is a little extreme. Sure, I could handle it if your whole party lost, but seriously. This is definitely one of the worst updates I have ever seen on a game.