Just called about my US Premier World MC and told them I was considering cancelling unless they could do something about the annual fee (due at end of Feb). Was then tranferred to a specialist. Talked with the specialist briefly and was put on hold for about 3 minutes while they checked with a supervisor and they came back with an offer to "reverse the annual fee of $89" after it hits. They also offered me one extra mile for every dollar I spent on gas, groceries, and some other things I didn't catch but only until 4-20-14.
So I said sure, and accepted the offers. This card is a little less than a year old with about a 3k total spend on it.