Hi Bugatti Fan!
I don't think she's in what you call mothballs. If they don't do something soon she will have to go to the breakers, probably somewhere in Bangladesh or India! If that, I would hope she breaks from her tow on the outbound leg, and goes down as a still proud but scarred Blue Riband holder, Which she NEVER relinquished, to my knowledge.
Last time I saw here she was rusty, forlorn looking and had a slight list to port. She deserves better. But what do we Americans care? We found a home for one of their Queens of the sea. But ours isn't good enough to save, What's with That??
Oh! as far as scale I believe the REVELL model is like many of their liners, aqntwhere between 1/400-1/535, and 1/600. Either way they were like Airfix's products, Decent models of a very Niche type of ship!
I have pictured her, Still with her Red ,White, and Blue stacks as a Hospital Ship, taking the wonders of Modern Medicine to countries by the Sea that do not have a shot at that kind of care, And YES, she could be called the H.S.S United States!