Just for the hell of it i called usaa today asking about a credit increase, i didn't think i was going to get it. come to find out they gave me a 4000 dollar increase on my american express card, and a 3000 increase on my mastercard!!!!
Since last summer, they've been offering in phases an invitation to have your USAA platinum mastercard upgraded to a World Mastercard. I recently saw an invitation notice in the right-hand side of the screen while I was looking at my USAA credit card account information while I was at their website.