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1. The PTS could stand to use a bit more detail, and I do like CT's suggestion of having Bond interrogate the driver by hijacking the car and then hanging him out of an open door, then dangling him out of the car and dropping him into an old minefield. As an added note, the parachutist doesn't need to be a woman. I basically got the entire concept for the PTS from doing an extensive read-through of the "Making of OHMSS" book in which a sequence very similar to what we have here is mentioned as being in an early draft of "DAF". In that version, the parachutist is Tiffany Case and the person driving the Land Rover is Irma Bunt.
2. Bond should get the Aston Martin Virage from Q when he returns to London. And, since terminus made the car 'fully stocked', I think we need to showcase it in a car chase at some point.
3. Maybe the implication can be that Chun wants Sienna's freedom not just for political reasons, but because they were former lovers? It could be a nod to Pussy's implied lesbianism in "Goldfinger". In addition, it could serve as another time-warping homage to the controversial 1995 film "Wild Side" in which Joan Chen and Anne Heche both play lesbians conspiring against their pimping boss, played by Christopher Walken. It doesn't need to be anything complex--maybe just a line or two of dialogue between Chun and Bond.