I have a few ideas. I think there is a lot of voting to get a chest. Once we get the chest, we get oops you won that before way too many times. I say, either reduce the oops you already won this or to make the voting times lower.
Thanks so much for reducing the voting. I am really happy, and I know it will make myself and others want to vote more. The game is getting better with every update. Thanks for all you do :)