I admit I rather like terminus' treatment because it's so radically different from the original film. I think we can combine the best elements of both your ideas and terminus to create a real doozy of a film.
I should clarify, I do like a lot of what terminus wrote, but at the same time I don't want to deviate too far from Fleming - I like putting in new scenes and material, but we shouldn't throw out the baby with the bathwater! Like I said, I think a lot of what he wrote is very suitable for a potential LALD plot.
Here are a few things to consider:
1- We can go with dino's idea of setting the PTS in Mexico with Bond on an assassination mission.
2- We need to find a way to fit in Tilly Masterson.
3- Where does everyone think the heist should occur, Kentucky or Hong Kong? Either way, we should dino's EMP idea over the relatively lame knockout gas from the film.
I think this is one of those cases where the specific location of Fort Knox is tied to the film and characters, like Japan in YOLT...I was about to say and the Alps in OHMSS, but we could conceivably have that taking place in any mountain range really. Anyway, having American gold works here because Blofeld's master plan may be to cripple the American economy (even further than it is!), so he can swoop in and buy huge amounts of shares in corporations, and thus will wield real power and influence over a superpower.
As for Tilly, she could already be working "undercover" somewhere in Goldfinger's organization, trying to get up close to GF to take her revenge.
4- I like dino's idea of Goldfinger using satellite imagery to cheat during cards, but as a compromise, maybe we could use the idea for Drax once we get to "Moonraker"? It will give us a chance to do a modern update of the classic Blades Club scene. 
I thought the satellite idea works specifically for GF because the card game takes place outdoors, with GF using the excuse that he's working on his suntan (which would be plausible with the ghostly pale Alexander Skarsgard!). You can't use a satellite if Drax is playing indoors at a Bridge club. (Will we have Bond doing speed in that scene, btw?

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5- Anyone have an idea of who could play Q/Boothroyd?
I'm still questioning if we even need him.