You could also pick up personal and business US Airways Dividend Miles cards from Barclaycard for you and your spouse. Links are out there for 40k bonus miles (not including balance transfer option) after your first purchase. Comes with an $89 fee (not waived). These cards are reported as easier to churn than Citi AAdvantage cards (and some people report holding multiples of the same card simultaneously).

Dividend Miles can be used on AA and MIGHT become AAdvantage miles in the next few years, but that's speculation.