I just thought about something. Once the coin is even moderately in demand, there will likely be so many users trying to mint it that they will be turned away by the money they lose every time they attempt to mint the coin and it has a failed transaction. There should be a counter on the webpage next to the mint button that says the gas spent by the previous transaction, or an average of the previous 10 transactions or something, so that users have a general idea if they will be successful or not.