However a suggestion would be those chests. There needs to be a way to ditch a chest that you really have no intention of wasting a key on (namely the ones you get from loosing). Often I find myself playing a round - winning it and then being disappointed that I can’t ditch a crappy chest for the new one I could’ve received.
At the end of the day a minor nit pick as most of the game is very enjoyable - easy to use and hey, if my 3 year old daughter approves your onto a good thing! Please keep it up!