Thank you for playing and for your feedback! We planned a lot of big consequences for losing the game and for *something* to happen to Mr. Dadd at the end, but scope creep got the better of us and we had to delay those parts to a later build :)
You're definitely right in that the coins need some more visual feedback on which ones you can and can't flip; I did try to place some catches in code that prevent you from cheating, but it isn't 100% accurate, either.