The standard 5-way blade is really a 3-way blade but with a blade that is just too wide, or just wide enough, depending on how you look at it. In the very early Strat days, Fender intended the selections to be bridge, middle, OR neck. The bridge plus middle and middle plus neck options were found by musicians, and subsequently adopted by Fender, who added extra "notches" to the switch in response.
The upshot of this is that it's impossible to use tone controls covering all three pickups without creating a short on the pickup selector side of the switch. Two tone pots covering any two out of three pickups, yes. Two tone pots, one shared between two pickups, no. One has to create a jumper over to the second set of contacts and use those contacts to add the tone connections.
The upshot of that is you don't have a bank of connections left vacant for an auto coil split, dumping the hot end of the first coil to ground and creating a direct ground for the second coil..
The good news is that the super-switch provides a third bank of connections to enable that ground connection.
The bad news is that the superswitch uses five individual connections for P-1 through P-5. Easy enough to jump the bridge inputs between P-1 and P-2, the neck inputs between P-4 and P-5. But to bring in the middle in P-2 P-3 and P-4 you need a FOURTH bank of contacts, otherwise you create shorts.
