As much as a bomber mosquito would be welcomed, I'm against having it with formations enabled.
When attacked it would have to maneuver - that's its defense. It means instant loss of the two drones. If it keeps flying level - it is dead. So either you give your attacker easy 2 kills just by going "booo!" near you, or you give him 3 kills if he actually uses his ammo.
Heavy bombers need their formations in order to allow a small number of pilots (1-2) still have a defense of a bomber box. For the mosquito, the formation is a hindrance defensively and will only serve as to allow a single player to deliver a larger payload in a sneak attack. The drones will be expendable in case it is attacked - that is dweeb play.
As a single bomber it has a good chance to out maneuver defenders and get to the bomb run. It would not have the ord to shut down a field, but 3-4k of bombs are enough to take out a designated hard target (a hangar) or multiple soft ones (ammo, fuel, radar). Even when hitting a city, spread out properly, it is a lot of damage. It would reach the target much faster (cutting down the boring climb-out time) and with surprise or some friendly fighter activity, has a good chance to make the drop and come out alive. It would be something between a JABO and a carpet bomber. Even for NOE surprise attack it would be great - more bombs, but without the jabo cannons for vulching after the drop.