V Formation on an X-Axis is a waste of resources UNLESS you're already engaged in a fight.
Preferably you'd actually want a reverse V in the Y-Axis to maximize scanners capabilities. And if you're in a somewhat advanced crew you'd want your team mates to be in different locations on the z-axis to max your sensors capabilities and to disorient targets. For example
1
2 x
3
4
5 y z
6
7
a b c d e f g h I j k l m n
Assume that x is dead center at Z0 and there are 3 units of space in front of it and 3 units of space behind it
In order to truly maximize scanners you'd want x at location g,2,Z0 y would be at a,5,Z+2 and z would be near l,5,Z-2
You'd still have the benefits of 2 of the wingmen being in a -Y axis while maximizing your scanning arrays.
On top of that if someone were to attack x. x could fly on a direct path towards y or z (depending on angle of attack and access of route) let's say x is flying directly toward y. z falls in behind the enemy while y flies directly toward x. now the enemy is following x into a frontal and cold 6 attack formation.
But that is an ideal unlikely situation.
Worst case scenario an enemy gets the drop on z. z flies directly towards x with a bit of an angle lower in the Y-axis so x can come down and get on the enemies tail while y comes in to clean up.
This formation would be a little tricky to master considering there would be quite a bit of room for error when trying to engage an enemy who has the drop on an outlying craft. But could prove beneficial in maximizing sensor arrays.