Quoted from vikingerik:I would figure Lawlor always wanted both lanes separately, the manual plunger skill shot (with the ball disappearing with that "bloop" sound effect, to rematerialize in the twilight zone) and the ability to autoplunge for multiballs.
Williams and DE had several bitter lawsuits over various issues, I dont see William's giving them a dime so they could have used Checkpoints auto plunge setup.