Players may withdraw their cash balance at any time by forfeiting the bonus balance so cash is not tied to the bonus.
Also, the bets are made from cash and bonus balance, and winnings go back into them, in the ratio of cash to bonus. For example, taking a 100% bonus on a $50 deposit means you'd have $100 balance made up of 50 cash and 50 bonus. If you are betting $1, 50c will be cash and 50c will be bonus. If you were to win $100, 50 will go into the cash balance, and 50 will go into the bonus balance. You can withdraw that cash balance without any further wagering. Obviously if you continue playing, this will continue until the full WR requirements are met. However as mentioned, you can withdraw the cash balance at any time by forfeiting the bonus balance. After the first 2 deposit bonuses, WR requirements are back down to normal and the bonus can no longer be forfeited to withdraw the cash balance.
Feedback from players preferred this, and the only way to be able to do this without abuse is to have a high WR in order to be able to withdraw the entire bonus balance.