I think it would be nice to have a push-pull bridge humbucker splitter integrated into the tone knob on Original and Custom models!
I do like to have it on my other guitars - it helps to achieve a single-coil "raw" sound with this type of a switch.
Of course, there are pros/cons to that but all in all I guess it could make the instrument a little bit even more universal - when I need a "single" on a bridge to do a nice solo, for example, I'd rather switch than change the guitar. ;-)
I'd also appreciate to hear any considerations against that...maybe, there are some reasons, but I could find none up to now...