<<I don't understand how your point #5 will improve fuel economy.

5. Use the brakes, not the throttle plate, to slow down the car. Push
the clutch in when approaching a stop instead of depending on the drag
of the engine.>>

I don't either , and this is possibly the worst suggestion ever.

The minimal fuel savings from free wheeling is nill, and all your going
to be doing more brake jobs than the fuel savings are going to be .

A Real Bad idea.

Coasting and playing the lights is one thing---but disengaging the
running gear/engine is a real bad thought.