I was disappointed when AA left MR. Travel packages along with the Citi AA cards worked well to get us some great trips. After AA left, we turned to US Airways. That has worked well too. Star Alliance has gotten us all over the world. (I do miss AA one way award travel.) The pending merge will take a long time to accomplish. The new airline is slated to be AA. I am hoping we do not lose another MR partner, but we get AA back in the fold.