Well what I am wondering is if the whole authenticator the only real reason not to combine all the accounts on one B.Net.

I know the next major concern is someone hacking your B.Net account and having access to "all" ones accounts.For me though that's not such a big deal as it initially appears.

Another major concern is Accidental banning of one account will ban your B.net but if I remember correctly the blues confirmed that banning one WoW account does not ban all the accounts on the B.Net.

Other than those is there anything really nasty about it?

For Example how does it affect RAF if its all on One B.net?