My favorite movie of all time, as well!
Maybe a "lightning sand" sinkhole where a R.O.U.S. comes peeking out as the ball sinks?
Callouts:
"Hello nice lady!"
"I'm not a witch, I'm your wife!"
"Sleep well and dream of large women."
"There is a shortage of perfect breasts in this world. It would be a pity to damage yours."
There could be a multiball mode where you have to send out the "Four fastest ships" to find Wesley. Or some kind of hidden "Pit of Despair" ....
Probably not. Now I'm sad.
-M