Bombers in this game aren't at all what they were historically.
However, keep this in mind:
Before we had the formations, the hardness levels were different. After we got 2 drones the hardness was raised (especially on the HQ, mind you). The idea is that with or without formations, it takes the same amount of players to perform a given task.
So without formations, hangar hardness would drop, as would HQ hardness, as would CV hardness. You'd still have single bombers doing the stuff most compalin about when a formation does it.
Remember, Hitech said that he could make C-47s carry 20 troops, but he'd just up the number required for a capture to 20 if he did. Same end result regardless of the number of them.