I credit my flights to AS, of course. And I get something between 50k and 60k EQM every year, which gets me to MVPG. The main portion of that is some long haul partner flights, which Mrs doesn't fly, so if I credit her flights to AS, she won't get MVPG (maybe she would get MVP, but that alone is not that useful).

Currently we credit all her AS and oneworld partner flights (mainly AA) to BA. The reasons are:
1. I sometimes fly some short KA flights and also credit to BA, family account can put our BA miles together, and BA is good for short haul awards.
2. Diversity.

But recently I noticed that AA flights started to get only 50% while credit to BA, we learned that the hard way with SFO-MIA-SXM roundtrip.

Should we continue to credit her miles to BA, or should we switch her to AS as well? My main concern is that the small amount of AS miles in one account will be hard to use, and we can't pool her miles to my account.