Couple thoughts on that:
Their main eye-catching prop being the slot machine, the second one was the bingo cage, which is something they can't control. You can have someone win on the word HOGTIEING, (and Chrome indicates a spell-check, so yeah.) where I imagine the producers were hanging hopes on a loss, or a four-time winner gets the word ELEGANCES, and moves most of the consonants into place and rides off in the car. You just never know what the lucky letters will be, and I don't think a production team wants their grand prize to be out of their tight control.
What they could have done is start a new champion with the jumble and say "it's your first day, if you can solve it like that you win the car," but after weeks of move one letter per day as champion, you can't really backtrack.
So you now play the bonus round on a computer generated gameboard that gets wheeled into place and producers get to stack the words, but instead of a seven-or-eight day winner piling up tons of loots and then a car, the show institutes a three day limit. Nobody can ever get too comfortable before they are back to the casino floor.
Fun idea and even with the benign questions it's a fun watch helped by the host team chemistry, but it's not a fantastic game.