Rory,
I've never been too good at keeping secrets.
My bass is basically going to be like yours, but the top lamination will be bookmatched to center. Also, I'm getting a carved headstock, but with an omega (combine your headstock with Gary's carved omega (balance K)).
It will have three ebony laminations, two purpleheart and six maple in the neck.
I'm hoping to have a custom inlay, details'll be forthcoming. It'll be an amazingly graceful design.
I'll be fascinated to hear what the final deal is with your electronics. I'm thinking about adding bass/treble pots where you have the 4-position rotary switches.
We should just go ahead and call mine a Rory tribute, I think. =)
Brad