ooh, sorry jumble jumble is right :-\ you can't split a duckbucker i forgot about that. so that option is out.
well the 2 push pull pots option shown above is a great one and can be used with a normal selector switch. but it negates auto splits because the parallel options would likely leave you with a kill switch in some positions (though i don't know if that's all bad but probably better to negate the auto split and take advantage of the extra options). you'd have many more options though. depends on what you really want. also the parallel option, though it is supposed to sound similar to a paf with scooped out mids may just give you that quack being that the inductance must be low, it should have all the presence needed to get that quack if it's mixed with the middle and stay will low loise.
i dunno the auto splits option is very easy to wire and can be made rails/p-90 switchable with a single push-pull, it can be made auto split-on/off switchable with a second and will feel much like a stock stratocaster with little thinking involved. but the twin push/pull without auto splits is not difficult to follow and offers more options. i think you are best sticking to one of these layouts which may not require a super switch. i personally think the fender american standard switch is better made and has a better feel.
one thing you might want to do with a super switch is change the middle pickup option to neck/bridge, or you can exchange one of the 2/4 "quack" positions for neck/bridge. really it's hard to decide with 3 pickups especially if they have such different coils. it's much easier to get really creative with 2 pickups because it doesn't mean losing usable traditional options. with 3 pickups exchanging the logical options for new ones might just leave you with controls only you understand and possibly sounds you don't find useful. the truth is that the complexities are nearly endless of what you can do especially with some external switches but you kinda need some rationale behind the designs. for example you could assign a pair of coils to each of the 5 positions then use a series/parallel/oop or series/parallel/split switch to control how the pair are used together (similar to the prs 513), or you could even use two super switches one that picks pairs of coils and one that combines them in series, parallel, split-north, split-south, parallel 1/3 oop (through a capacitor) then have a phase switch on one coil to get full oop in series and parallel and 2/3 out of parallel. other things you could do are have some unusual series or oop option in there.
not everything you can think of can be done with a 4 pole super switch (that's why custom makers have 6 pole versions as well) but i'll bet many things you can't think of are.
