Background info: I'm not too immersed in the CC game, but I did sign up for a Marriott card back in August to test the waters (hurray free points). Then I tried immediately for the AA 75k cards and get rejected. So I've been on the sidelines to see if a big deal comes before end of the year. Apparently the AA deals just get worse and nothing amazing has come along.

Now I'm wondering if it's worth applying to cards like the Continental OnePass, get the 25,000 bonus miles after first use and then cancelling the card before Continental and United merge their CC programs? This way, after they start issuing a newer post-merger credit card, I'll still be eligible for that bonus?