last I looked you could kill the guns of a Battle group, why not go after the guns first then have your furball? or do both attack the Battle group, expending any droppable ordnance then join the furball?
This would be in fact expanding your horizons, just as you are saying that the "safe" gunners should do.
You cannot have it both ways, if you want to furball near a Battle group then for sure someone is going to be shooting up at you for kills and to defend the Battle group and friendly aircraft taking off or landing.
You may not consider what they are doing as credible, but they do and if you can't get enough attackers together to drop the Battle Group, is that the fault of the gunners? There are several flyers capable of taking down carriers, but, the cries of outrage from the Furballers, after the fact, usually means that these people don't even bother, and you wonder why no one will join or organize a massed attack on a Battle Group.
On another note, if the Battle Group was armed with the array of weaponry true to real life (WWII), it would seem like a solid wall of tracers would be coming up at you and thinking about furballing near a Battle Group would be closer to suicide than it is now.
I think manned AAA and AI AAA are viable and if you aren't willing to adapt to thier presence and come up with a creative solution, then you are doomed to disappointment and frustration.