In best Keanu Reeves mumble - "Dude, isn't a humbucker like . . . two pickups in one, already? I mean, if I add another one then I'd have like . . . four pickups, man. Whoa."
It still needs a slot for a Bic lighter, BTW - and maybe a stash compartment, behind the back plate. Not that I spend any time thinking about that sort of thing, you understand, it's just about completing the design.