Gave it a good crack tonight.. Up there with the best shooting Sterns ever. This is what Xmen should have been. What is special about it is that not only is every shot set up perfectly to hit but the loops (upper right) and spinner (U-turn) have been set up so well that they slow the ball down enough to make the next shot. Kind of like Doctor Who but no metal insert to slow the ball.
Not that JP failed in this area, but games like JP, ST were never really designed well enough to cater for continuous loops (maybe this was intentional). The upper left loop is like a combination of Maiden for speed and JP for smoothness. As for the spinner shot no matter how fast it goes up there it gives you time to set up for the right ramp, upper left loop, VUK.
I only found out about the diverter today as well. Up there with Sterns best ever playfields, even though Borg is a slacker I have to give him credit for getting it right. Beautiful game to play.