Not sure if anyone else noticed, but it looks like some of the gates used in the '67-8 Galaxies were opened, including the exhaust system. That's a win for builders right there.
The C-stripes are great, wish they would have added the gold as well, which would be striking on a black body. For future reference, posting clear shots of the decal sheets and part breakdowns should be a mandatory.
As for the lack of detail in the '69 Galaxie annual (and subsequent releases) ...
By 1968 (when 1969 kits were in development) AMT was in free fall, despite the mythology of "we couldn't keep up with the business..." Promo contracts were shrinking rapidly and orders were plummeting, while competitors. like MPC were ramping up. AMT was also digesting significant financial losses from their slot car adventure with Dynamic, which took on water nearly as soon as the ink was dry on the deal. Societal trends of the late '50s became giant headwinds a decade later.
Net: Where once the Galaxie kit was a flagship of AMT annuals, by the '69 model year they were cutting part count and scaling back tool development as fast as possible. So... no 385-series engine, no deluxe wheel covers, just a one-piece promo interior shell, one-piece chassis, two wire axles and four screws. To be fair, this was happening across the line - compare the '66 Rivvi annual to the '69 in parts count and accessories.