"w/o losing the classic outline"
Doesn't work for me. At the least it looks like McGruff the Crimedog took a bite out of its ass. With reason.
My '64 TBird II weighs 7.8 lbs with heavy vintage klusons and a big headstock. TBird Reverse neck dive would be almost completely eliminated with a smaller headstock, minituners or ultralites and a THICKER BODY. Weight would be less than 9lbs, possibly 8.5 Better solution IMO