For whatever it's worth, I think it would be quite a mistake dropping our ratectl. We'd be losing quite some functionality by adopting FreeBSD's way here, which just has ratectl for ath as Joe pointed out.
If Joe would be willing to switch the newly ported drivers to ratectl, that would great. I don't think Sephe has much time lately, but maybe someone can drop him an email. Just my two cents, Alex Hornung