So, I've been waiting impatiently for the change credit limit link to pop up on my USAA VS Rewards (Was a MC World before USAA switched all members over to Visa). The link appeared back during the summer but I added an AU and I've yet to see it again (basically disappeared after adding them before I had the chance to request). I've been with USAA since 2008 and I've had my CC since Jan 2011. I started out at a $9k limit and I've never requested more because it wasn't my daily driver and I felt I had more than enough. August 2015 I received a $1,400 auto increase (I use my account regularly but def wasn't an every day card). This morning I logged in and noticed my limit had gone from $10,400 to $12,500. So, it is very much possible to get auto CLI's from USAA. My Experian is in between 705-710 due to some new accounts this year. The card has not been PIF in a few statements (AU took advantage of a 1.9% offer). I hope this information helps someone else.
Congratulations on your auto CLI, very nice!