It is disadvantageous to fly without wingmen. Historically, it was hardly ever done. But it is (apparently) way too difficult to actually coordinate mutual support with other human players in this game.
The vic was a standard formation at the start of the war, good for concentrating fire on attacking bombers when acting as interceptors. Not so good for dealing with fighters as it turned out, but coading finger-four would be asking a bit much.
Therefore, I request being able to check a box that will give me two artificial wingmen who will follow me welded-wing formation and fire in parallel to me, at least when flying certain dedicated interceptors like the 110, 190 series, 262, etc. Call them "drones" if you will.
I'm pretty sure this can be done. We have the technology.
There should probably be some limit on the maneuvering the interceptor vic can do without loosing the "drones", while allowing for some maneuvering. The current technology for that again seems adequate, as bomber formations *already* dogfight fairly nimbly.
Also, I suggest that external views be allowed for interceptor vics, to simulate the look around capacity the eyes of wingmen would give you.
This is still an imperfect solution, not nearly as good as having human individuals in the other two planes, but a necessary one I think. Otherwise historical coordinated formations of interceptors will almost never be seen in the MA.
As a balance, I suggest that fighter formations only be enabled when flying in a new category which I dub "Interceptor" category, with scoring and perk points all it's own. Only kills of things that can be flown as bomber will count towards score in this category, any incidental kills of fighters will not count, rather like how kills of vehicles don't count when flying fighter.