I take it you recall the 2003 SEMA 110 CKD?
Anyway, the fact of the matter is, a CKD is not a kit-car. The end-purchaser is not the assembler. CKDs are shipped to a regional assembly point, where they are put together, then sold. A kit-car is designed and built by a company to create a vehicle that usually utilizes components from recent production vehicles, but has either a unique appearance or replicates an older, rare automobile. Since Defenders are actual production vehicles, they can't legitimately be considered a kit car, even if you ordered all of the parts individually and assembled it yourself. With kit-cars, they are usually designed to be somewhat simple to assemble, whereas the Defender isn't designed as such (although a Defender would be simpler to assemble than most other new automobiles).
I've read rumors that the purpose of the 2003 SEMA show 110-CKD was to test the waters about having them be available for purchase as an "advanced kit" as you were originally indicating, but that as it isn't a true kit car, they couldn't get around a lot of the liability issues, and dropped the idea instead of pursuing it further. (Combined with Ford's engine supply issues, it became a non-starter.)
Don't mean to dampen hopes and dreams, but, for now, your best bet is to either locate a '93 NAS 110, have a place like ECR build you what you want, or, get a '83 110 brought over next year and upgrade it.
FWIW...
-L
'72 SIII SW 88"
'60 SII 88" RHD