First off, I am guessing that these drone ships will not be able to cheat and fly into formation if your 100% throttle. You'll have to be gentle and let them get in formation. Because there is no lag, and they're AI you probably won't have much trouble getting into formation.
No more dogfighting bombers. I will guess that collisions with these AI bombers in your flight will be on. You can whip around, but be warned that Captain Chaos and the Cranium Commandoes flying the other planes would crash into you if you fly too rough, turn the formation too fast, or cause them to fly out of control too easy if you do anything whacky. They'll maintain formation only if your gentle. Anything else makes life difficult.
As for gunnery, here are the possiblilies that I see.
1. Same as we have now. you run one bomber and all the guns slave together on that one bomber. The other 3 bombers are sitting ducks. I doubt this is the planned system.
2. Multiple bombers all slaved togther. You thought you could unleash a rain of death, now your x4 stronger. Convergence issues might make that not work too well.
3. Same as we have now, though you can also choose which bomber to man.
4. AI guns on the other AI planes.
Either way, I like how this is going. Carpet bombing is what we need, but I will assume that this also means there will be targets that can ONLY be carpet bombed. Mass fighter bombers will be inefective.