Well, a big to Continental (or perhaps it's a broader *A issue on this) for obfuscating the mileage-earning ability of codeshare flights. I remember with SkyTeam there were multiple charts, showing what, for example, a DL codeshare operated by AF would earn. It was a lot of data, but at least it was transparent.

And I thought the whole reason CO changed its fare structure alphabet was to align it with *A.