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I'm wondering what Amex looks at when deciding whether or not to issue you an offer to upgrade your card. For example, I currently have the green amex charge card which I won't keep beyond the first year, but I'd love if they offered me a chance to upgrade to the personal plat card with a signup incentive. I already had the personal plat in the past so I can't get the bonus again and I would find the benefits of the card useful for travel next year.