Are you kidding?
Since the vast devaluation of BA miles I have avoided them.
An AA mile is worth a whole lot more than a BA mile.
True, BA miles are, in theory, good for short flights in North America (on AA, Alaska etc.) but availability is not good, IMHO.
Tried a couple of weeks ago to get something SEA-BUR using BA miles (of which I have a pile). No go.
Easier to buy a ticket than go around with BA--and, you have to call BA, no net booking for AA, Alaska etc. and deal with their very limited hours.
Phooey!