To be honest, you get way to little Planet Coins and WAY WAY WAY to much Gold. Add more gold uses and give us more of a chance to get Planet Coins and use them. BTW, the place you put to place the pop-up when you are refilling your energy/stamina for 10 pc (who would even do that?) is the EXACT same place where the overused heal button is. Many people will accidentally click "OK" and will waste their pc. Dear god what an awful flaw.
Yet you are the one who is playing it? Maybe you should rethink your pathetic little life?