[feuerdog]

A platoon is made up of squads, so we can always extrapolate from one into the other.
If a squad is about 6~10 players, then you only have to determine you required need to complete the objective. One squad, two squads, or an entire platoon,....or two?

The tricky part isn't determining how many, but what composition, and is it generic or specific. There are far too many variables to predict specifics, so you either build as per the need or cover as many common needs as possible.

MAXs have been shown in pre-beta footage to be outmaneauverable and more readily defeatable, but it's important to note that this is pre-beta and there is much balancing to be done.
IMO the MAX will be very powerful at holding room/choke point, especially with proper engineer support.
Again, pre-beta footage has not shown alot of well played MAX units.

Also, we have not seen how different the continents, terrain, and bases will actuially be. There will surely be aspects of Biolabs alone that dictate the need of a specific squad composition.
How about night operations? Night/thermal vision needs?
Elevated base structures? Light asasault, airborne needs?
Open terrain bases? Armored vehicle, Gal spawn needs?

Flexible and rapidly adapative compositons will be key aspect of successful ops.