Huh? So you would run nylon toothed timing gears??
The recall was the largest ever in the auto industry and they cut corners to reduce the implementation cost.
Interlocking was a design change that I believe was implemented in 69 (the other divisions already had interlocking). So that is a vintage design. And if you broke a mount in 69, that's what you'd get. The recall was 1972.
Airbags are kinda newer technology, not sure what you point is......
Your choices are:
run a poor design that all the other divisions chose not to use
run a poor design with a ugly bandaid so when it breaks, it doesn't bind up the throttle linkage (which is why they went to cable linkage in 70)
run a better design that noone can see anyway