Perhaps saussage is thinking of the Surprise wedge?
John: I think that format might be a little broken. The crafty contestants (of which Wheel has few, sadly) are going to get RSTLN and (probably) however many vowels they want/need--and with large puzzles, they'll still stand a good chance of losing. Everyone else, excepting a few flukes, is going to call the H after the T because they know how to spell "the", repeat letters, and try to solve when they don't know it and can still buy vowels. One of the good things about the current bonus round is that, if the contestant is without a clue, it's all over much faster.
Jimmy: Are you going to assign the letters on the wheels randomly, or will they be tailored to the puzzles? I'm getting visions of kids on Wheel 2000 spending half the show on a stunt only to earn all the Xs, Qs, and Js in the puzzle.
Now that I'm done whining, well, my suggestion was sort of offered already. But rather than giving the show a tranquilizer, I would want a better crop of contestants. That's a valid single change, right? "Hey, guys. Don't bring in contestants who can't figure out that the three arrows on the wheel *might* mean that everyone has their own to watch. Thanks." That would probably take care of the hyperactivity problem, as the smarter contestants would just ignore the exhortations of the Wheel staff (and Pat would get fewer migraines).
(But seriously. If your bonus round puzzle is an EVENT, and you get _ _ _ _ N _ / _ / _ _ _ E, and you call an I and a G, I will laugh at you so much.)