4.14?!?!

[Tolwyn]

I'd rather see that option in the mission file.

Adding a value directly after the formation variable, in meters.

[r0101]
Planes 4
Skill 1
Class air.A_20C
Fuel 100
weapons default
[r0101_Way]
NORMFLY 20434.23 23393.10 500.00 300.00 &0 F8 50
NORMFLY 33021.71 23491.19 500.00 300.00 &0

(50 being the new value).
Obviously, you'd have to be careful with this cause you might have values too small or oulandishly too large (not sure how that works).

But I think the mission file is where that should be, not conf.ini; as that would/might retro-actively affect older mission designs.

Of course I'll state the obvious:

Not likely going to happen since changing formation spread is right at your fingertips in the radio menu; although the flipside to that statement is that it won't help you if you are in the 2, 3, or 4 spot, so...