I've had the Citi Platinum Select AAdvantage card for a while now. I got it mainly for the sign up bonus and haven't had any other Citibank cards in the last 15+ years. As a day-to-day card it doesn't provide much benefit to me - I already have elite status on AA so I don't need the priority boarding and free checked bag, and other cards (like my Amex) earn more points even for American Airlines purchases. I'm not a "whale" when it comes to credit cards anyway, perhaps $30k maximum in personal spending every year (business expenses have to go on my non-points-earning corporate card unfortunately).

Trying to think through my strategy for the best Citi cards to use & keep once the next annual fee for my AA card comes due. I know that Citi usually allows product changes even for the AA cards, so if I switch it to a Double Cash there would be no annual fee and I could earn 2x TYP per $ for everything. Then, if I apply for a new Citi Premier account I could benefit from the 80k TYP sign up bonus and the 3x earning on certain categories. If I carried both cards, I could use the Double Cash for the 2x on everything else and pool the Thank You Points together into one account, correct?

Also, my wife has had a Double Cash card since it first came out (2014?) so are we able to combine TYP from both accounts?

Seems like a win/win to me to have both the Double Cash and Premier. Transferable points to airlines is mainly what I'm looking for in terms of rewards. Anything I'm missing here?