This is all rather moot.
Yes, you can find subs with BB's in the game. But it's usually too damn costly to the BB group when it bumps in to one.
The effect is all we really care about, not the details.
As I said, rename the units to something like BB Division 7 and Desron 11 instead of actual names, and all this BS goes away.
The same should be done for HQ's too, imho.