Thanks for all the comments, guys!
The all-rosewood neck would be great (how did you guess I'd go for a '59 Roundback, Hunter?

). But I suspect it would be too heavy on a thinline.
HTH, Copperhead - ebony is the most likely choice for the board, for the brightness and because I haven't got a guitar with an ebony board! Won't consider rosewood unless I go for a maple neck. If I reverted to a mahogany neck with an ebony board, would the brightness of the ebony be enough to counteract the warmth of the mahogany? I suspect not.
Wez, thanks for the info on the veneer idea - definite possibility! :D
But this would lead to custom order, what you don't really like :(
Yeah, you're right! :lol: I don't like the fact you can't see the actual pieces of wood on (Warmoth) custom orders. I know they have the "unique choice" fingerboards, but they cost an extra $45, and the '59 Roundback costs $35 - custom necks work out a lot more expensive than showcase ones. :(
I'm going to keep watching the showcase for a few weeks and see what comes up.