[vtrelut]

This is already possible with DGen campaigns: one can increase player's flight size to 12, and one can have several friendly or enemy flights in the same mission, of the same aircraft type (bomber of fighter for instance) but different models, with the combination being changed when each mission is generated, on a random basis. AI squadrons and skins will also be changed each time, on a random basis, if the author made it so that there is such a possibility. If you add RandomFlights=5 to your conf.ini, there will be even more such possibilities of randomly generated flights of various types. Also add AirIntensity=High to your conf.ini, in order to increase flight size.

You can have an illustration of this if you try some of the campaigns included in EnjoyR patches.

DCG also offers such possibilities.

For static campaigns and single missions, it is up to the mission builder.